Yea, in any other case I would agree with you.

However, considering the whole point is to apply for a front-end dev job, and the stuff I describe is SUPER easy to do. I think it's relevant. I'd think I'd want to "put up" so to speak, and say "check it out, I follow best practices".

This is really really low-hanging fruit, the sort of thing you should be doing by default basically.

There is no such thing as "overkill" when generating code that you hope will get you a job interview.