Thanks Kevin ... just asking: do you propose this change because the syntax is wrong or because you prefer the syntax with the arguments word in it? I'm asking because not adding arguments is valid ... I've just checked some Symfony apps of mine and sometimes I don't add arguments in some service configuration. Maybe I'm missing something here?

arguments can be omitted when it's the only key to be defined.
Ref symfony/symfony#21313 and #7441.
I would close this one.

Thanks a lot Jules 🙏 That's the confirmation that we needed here. Let's close then. Thanks!