>>360791641
The Occulus Quest 2 has a built-in processor that allows it to be used as a VR headset without even connecting it to a computer. Facebook has an app store for it and everything, much like a mobile phone or something. There is a version of VRChat that can be run on the Quest 2 without a PC, but you will have the aforementioned restrictions on instances you can join and which avatars you can see. 

However, you can also use the Quest 2 as a PCVR headset by connecting it to a PC. When you do this there are no differences between it and any other PCVR headset. That's what people around here who have a Quest 2 do.