I'd rather not be stuck not having a way to properly test content that I've made a quest version of, pretty sure nobody does, I'm thinking a flat or 3dof android build, or a testing specific client (debug tools, android build emulation, limited to your worlds or VRchat home, private) would work for this purpose, it would be better than having no feasible way to make sure a quest version of an avatar even works other than finding some random quest user you don't even know to test it for you...