docs: add more context to ignoring Windows attribute changes

windows.go

@@ -94,11 +94,21 @@ func (w *Watcher) Add(name string) error {
 	}
 
 	// When reporting file notifications, FILE_ACTION_MODIFIED includes changes to file attributes;
-	// so attribute handling is broken for Windows (op.Chmod will NEVER get used in practice)
+	// so attribute handling is broken for Windows (op.Chmod will NEVER get used in practice).
 	//
 	// To prevent events for attribute changes erroneously showing up as file modifications,
 	// FILE_NOTIFY_CHANGE_ATTRIBUTES (sysFSATTRIB) is excluded from the notify filter.
-	// NOTE: This means attribute changes will NOT be reported for Windows.
+	//
+	// This means attribute changes will NOT be detected on Windows, as this has been deemed
+	// better than misreporting them as file modifications.
+	//
+	// For most purposes, especially since there is no execute bit in Windows/NTFS, these events
+	// are uninteresting, but it appears some security/AV/backup software can trigger excessive
+	// attribute changes resulting in lots of events for otherwise unchanged files.
+	//
+	// To accurately get Chmod events, a substantial refactor would be needed to set up two
+	// underlying watchers - one with a FILE_NOTIFY_CHANGE_ATTRIBUTES filter and another with
+	// the remaining filters, so that attribute changes can be reliably detected.
 	//
 	// See also:
 	// 	* ReadDirectoryChangesW flags: https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-readdirectorychangesw