Did you know not performing as you think another player should in a group

[Reynhart]

Not nearly as far as you are going to ensure you're correct, facts be fanned. It's a non exhaustive list that focused on language, and the avoiding anti harassment was an example of something that didn't make their list.

No, it's a definition based on language with a non-exhaustive examples of them...and there may be other types, far more aggravating that someone pulling too much or too little for your taste.
On a sidenote, I'd like you to provide that "facts" you claim. And something more sturdy than "GM won't do anything because any reason can be shoehorned is "whatever we want it to be"". You can kick someone actively participating for "Connexion lost" and they'll still tell you "We can't intervene for different playstyle, sorry"

I really don't think the people who are kicking with reckless abandon care bout justification.

That's exactly why kicks should be more restrictive and less subject to a simple case of "bad look" or "not saying Hello".