Quest 2 users have long since left their peak population, but are still very much around to this day, far from being the endangered species the community often states them to be. I've wondered why 'Questies' (as the community has rather un-affectionately named them,) has so much resentment for these users. After some time in public instances asking questionnaires to completely random people, I've boiled it down to just two things.

Even if you do not fall into either category, the stigma around Quest 2 users remains as strong as it was since Quest 2 players could play VRChat for over 3 years now.
A: Quest 2 users are often too young to be on the platform. VRChat consists of users and content usually of 17+ nature, and because of this there is often a lot of scrutiny and prejudice because most 'Questies' are <17. Understandably, a lot of people on the platform are uncomfortable with this idea and often will shrug off or go as far as to break ToS and crash Quest users to make them go away.
B: PC & PC-VR users have for the longest time, had to accomodate and optimize our avatars specifically for a significantly weaker system which its users will probably not even show the avatar for. I can personally attest to the difficulty of optimizing an avatar for Quest 2 compatibility when not using an impostor, and even VRChat knows Quest 2 users can't handle very much.

Oh also, elitism or something.

BONUS LIMITED EDITION HOT TAKE: Quest 2 would not have sold out as well as it did if VRChat was not popularized by celebrities during, and shortly before the pandemic in 2020 started.