I mean you can do whatever you want in a hobby project you work on solo.

I do want to say that I have the opposite view. People who use formatters want their code to be consistent and go the extra mile it ensure it does. It's like manual testing vs automated testing to me. Sure with manual testing you can test many more corner cases as they come up as an intelligent person is in the loop. But there will be mistakes made, tests forgotten etc. Just like there will always be inconsistencies when you manually format the code.