I felt that. I have a colleague whose coding style is different to mine and whenever they work on code that I originally wrote, I have to resist the temptation to modify things to camelCase.
Format on save is a godsend. Copy paste something with whole indentation? Ctrl-s, it's back to normal.
Did some wacky nested anonymous function calls? Ctrl-s, and they're laid out nicely.
I honestly almost golf my code nowadays and just let the tooling fix formatting for me. The space bar and enter key are in an ideal world vestigial for the purposes of programming.
It's interesting that something this minor gets people so upset. I mean, I get it, but objectively it's weird of us.
I had a debate years ago about test naming. When I was a junior, the lead dev used test methods with an underscore separating different cases. Like testServiceConnector_success(). I thought that's pretty neat and kept that style. In another project one of the devs almost had a meltdown because I dared introducing underscore scum into "his" project.
I think it's just that we're possessive/protective of "our" code, even more so if one is passionate about programming. We've put a lot of effort into it, then somebody else comes along and "ruins" our "perfect" (to our eyes) formatting/styling!
Last year I had a module for ai stuff. We did things in Python and I am quite into doing things as coding standards say. My mate didn't really care so much and just went for his style of doing things, also not really worrying about descriptive names etc.
Well, let's say, we weren't having a good time.
I also realized that I was probably too harsh and tried to go a bit more easy on it later, but many things just felt wrong.
Add black, isort and flake 8 to your repo, you can set it up to be applied on commit.
So folks can modify their local config all they like, and when they push it's to the team standard and when they work locally it's to theirs. It's the best.