Confusing example of the console monolog handler

[speller]

The page https://symfony.com/doc/current/logging/monolog_console.html suggests the following console handler:

# config/packages/dev/monolog.yaml
monolog:
    handlers:
        # ...
        console:
            type:   console
            process_psr_3_messages: false
            channels: ['!event', '!doctrine', '!console']

At the same time, it excludes the console channel by having the !console exclusion config value. How does it work if it doesn't accept messages from the console channel?