Those who don't give a shit are no real creators. Kaiylast for example is a very good example for that. Kitbashes, reuses and retextures the stuff, if you have 1 of those avatars in the instance (mind you, 9800X3D and 5070 Ti OC Prime), the GPU goes from 50%~ up to 70-85%, depending how close you are to the avi (most of the textures aren't even compressed too).
If you have those couple-avis, especially the new ones, you are lost. Frames will drop from 120 (Q3 Hz cap) down to 60 ish.
They are so horrible. Not even considered optimized by a degree.
It is a clear sign of making fast money with fools who are also ready to pay for something which they may even not be able to use in front of a mirror. There is nothing more infuriating having people using avis in front of a mirror and complaining why their frames suddenly dropping.