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

[Reynhart]

Then SE can add an option for "Differing Playstyles."

If they do, we'll have a totally different discussion.

"Inappropriate Behavior" can also be considered "Harassment," by the way. Especially considering the definition you posted.

Considering the support center clearly separates "Harassment" and "Inappropriate behavior" in the source I provided, no, it's not.
And again, "Inappropriate behavior" is not listed in the vote kick system. So, basically, you can be reported for a vote kick if you didn't realize your party has a lootmaster and you don't like how he disributes the loot.

Did you see the word "non-exhaustive" in there?

Yes, non exhaustive language. Didn't you see the word "language" in there ?

Or the whole last paragraph?

Are you really trying to advocate that "not doing AoE" is the same category as trying to bypass the anti-harassment feature. Damn, people go to great length to justify kicking people.