I hate “professionalism”. I know, it’s a requirement for many jobs. But I’d feel uneasy and unwelcome in such jobs and companies, so I might as well say: Just fuck it.
Professionalism is about average people posing as if they were smart. Professionalism is to the corporate world what political correctness is to politics. That is to say, bullshit.
The idea of “best practices” is no better. If everybody is doing something, how can it be the “best” thing to do? Average at best. More probably, mediocre, dumb and boring.