diff --git a/phpstan.neon b/phpstan.neon
index 654ce0db3ec..2346be283eb 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,10 +1,6 @@
 includes:
     - vendor/symplify/phpstan-rules/config/symplify-rules.neon
 
-rules:
-    # @todo this rule is costly and designed for hand-on refactoring; enable only when needed
-    #- Rector\Utils\PHPStan\Rule\LongAndDependentComplexRectorRule
-
 parameters:
     level: 8
 
diff --git a/rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/config/configured_rule.php b/rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/config/configured_rule.php
index 5f9ed1a8552..d1132dea29c 100644
--- a/rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/config/configured_rule.php
+++ b/rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/config/configured_rule.php
@@ -3,8 +3,8 @@
 declare(strict_types=1);
 
 use Rector\Config\RectorConfig;
-use Rector\ValueObject\PhpVersionFeature;
 use Rector\TypeDeclaration\Rector\ClassMethod\ReturnUnionTypeRector;
+use Rector\ValueObject\PhpVersionFeature;
 
 return static function (RectorConfig $rectorConfig): void {
     $rectorConfig->rule(ReturnUnionTypeRector::class);
diff --git a/rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/config/configured_rule_true_in_union.php b/rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/config/configured_rule_true_in_union.php
index 68597338d92..3870cf3c697 100644
--- a/rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/config/configured_rule_true_in_union.php
+++ b/rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/config/configured_rule_true_in_union.php
@@ -3,8 +3,8 @@
 declare(strict_types=1);
 
 use Rector\Config\RectorConfig;
-use Rector\ValueObject\PhpVersionFeature;
 use Rector\TypeDeclaration\Rector\ClassMethod\ReturnUnionTypeRector;
+use Rector\ValueObject\PhpVersionFeature;
 
 return static function (RectorConfig $rectorConfig): void {
     $rectorConfig->rule(ReturnUnionTypeRector::class);
diff --git a/utils/PHPStan/Rule/LongAndDependentComplexRectorRule.php b/utils/PHPStan/Rule/LongAndDependentComplexRectorRule.php
deleted file mode 100644
index a3139c80cff..00000000000
--- a/utils/PHPStan/Rule/LongAndDependentComplexRectorRule.php
+++ /dev/null
@@ -1,132 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Rector\Utils\PHPStan\Rule;
-
-use Nette\Utils\FileSystem;
-use PhpParser\Node;
-use PhpParser\Node\Stmt\Class_;
-use PhpParser\NodeFinder;
-use PhpParser\Parser;
-use PhpParser\ParserFactory;
-use PHPStan\Analyser\Scope;
-use PHPStan\Node\InClassNode;
-use PHPStan\Reflection\ClassReflection;
-use PHPStan\Reflection\ParametersAcceptorSelector;
-use PHPStan\Rules\Rule;
-use PHPStan\Type\TypeWithClassName;
-use Rector\Contract\Rector\RectorInterface;
-use TomasVotruba\CognitiveComplexity\AstCognitiveComplexityAnalyzer;
-
-/**
- * @implements Rule<InClassNode>
- * This rule helps to find overly complex rules, that usually have little value, but are costrly to run.
- */
-final readonly class LongAndDependentComplexRectorRule implements Rule
-{
-    /**
-     * @var int
-     */
-    private const ALLOWED_TRANSITIONAL_COMPLEXITY = 140;
-
-    private Parser $phpParser;
-
-    private NodeFinder $nodeFinder;
-
-    public function __construct(
-        private AstCognitiveComplexityAnalyzer $astCognitiveComplexityAnalyzer,
-    ) {
-        $parserFactory = new ParserFactory();
-        $this->phpParser = $parserFactory->create(ParserFactory::PREFER_PHP7);
-
-        $this->nodeFinder = new NodeFinder();
-    }
-
-    public function getNodeType(): string
-    {
-        return InClassNode::class;
-    }
-
-    /**
-     * @param InClassNode $node
-     */
-    public function processNode(Node $node, Scope $scope): array
-    {
-        // check only rector rules
-        $classReflection = $node->getClassReflection();
-        if (! $classReflection->isSubclassOf(RectorInterface::class)) {
-            return [];
-        }
-
-        // not much complex
-        if (! $classReflection->hasConstructor()) {
-            return [];
-        }
-
-        $extendedMethodReflection = $classReflection->getConstructor();
-        $parametersAcceptorWithPhpDocs = ParametersAcceptorSelector::selectSingle(
-            $extendedMethodReflection->getVariants()
-        );
-
-        $originalClassLike = $node->getOriginalNode();
-        if (! $originalClassLike instanceof Class_) {
-            return [];
-        }
-
-        $currentClassLikeComplexity = $this->astCognitiveComplexityAnalyzer->analyzeClassLike($originalClassLike);
-        $totalTransitionalComplexity = $currentClassLikeComplexity;
-
-        foreach ($parametersAcceptorWithPhpDocs->getParameters() as $parameterReflectionWithPhpDoc) {
-            $parameterType = $parameterReflectionWithPhpDoc->getType();
-            if (! $parameterType instanceof TypeWithClassName) {
-                continue;
-            }
-
-            $parameterClassReflection = $parameterType->getClassReflection();
-            if (! $parameterClassReflection instanceof ClassReflection) {
-                continue;
-            }
-
-            $dependencyClass = $this->parseClassReflectionToClassNode($parameterClassReflection);
-            if (! $dependencyClass instanceof Class_) {
-                continue;
-            }
-
-            $dependencyComplexity = $this->astCognitiveComplexityAnalyzer->analyzeClassLike($dependencyClass);
-            $totalTransitionalComplexity += $dependencyComplexity;
-        }
-
-        if ($totalTransitionalComplexity < self::ALLOWED_TRANSITIONAL_COMPLEXITY) {
-            return [];
-        }
-
-        return [sprintf(
-            'Transitional dependency complexity %d is over %d, please consider splitting it up.',
-            $totalTransitionalComplexity,
-            self::ALLOWED_TRANSITIONAL_COMPLEXITY
-        )];
-    }
-
-    private function parseClassReflectionToClassNode(ClassReflection $classReflection): ?Class_
-    {
-        $fileName = $classReflection->getFileName();
-        if (! is_string($fileName)) {
-            return null;
-        }
-
-        $fileContents = FileSystem::read($fileName);
-
-        $stmts = $this->phpParser->parse($fileContents);
-        if ($stmts === null) {
-            return null;
-        }
-
-        $foundNode = $this->nodeFinder->findFirstInstanceOf($stmts, Class_::class);
-        if (! $foundNode instanceof Class_) {
-            return null;
-        }
-
-        return $foundNode;
-    }
-}