No, we're all just folks. Sometimes you get jerks in ANY area of the game: DMs, heavy roleplayers, disinterested roleplayers, optimizers, or any other avenue where jerks can naturally manifest. But most people are not jerks.
Uh huh. Here's the thing, though. If we used the term "jerks," to describe certain behavior, you can be certain that there would be a subset of people who would then argue against it, saying that:
1. Hey, you should use some other word. #letsargueaboutdefinitions
2. You shouldn't use that word, because even if it is accurate, I've seen a person call another person a jerk, and since that person wasn't actually a jerk, that means that using that word is just people trying to keep non-jerky behavior down. #notalljerks
I kid, but not really. Look, there's certain archetypes of behavior in the TTRPG field that we've all been familiar with and have seen. And it's not new- it's been described and catalogued in D&D since the game started. Of course it's a banal point to say that archetypes cannot capture the complexity of human experience, but it's also a truism that the archetypes formed because of observations.
Here's my rule of thumb (you can use it if you want). If you think that certain bad behavior requires you to mount a massive defense, ask yourself ... why? Why do I need to defend it? What is that saying about me?
Because there are terms people use commonly to refer to a specific subset of jerky behavior that crosses the line (social compact, etc.). If you aren't engaging in it, why do you care? I know the rules. And I make good choices when I make characters.
But I'd like to think I'm playing a group game that is fun for everyone, and as they say ... if it's not for everyone, it's not fun for anyone.