>>365569391
If you're just using it for wireless PCVR over airlink, I think you'd be fine unlinking with Oculess. If you wanna use the Quest version of it though, you might have some issues. Unlinking supposedly breaks some stuff for Quest native games, but cracked ones might still work.
I don't think a burner Facebook account is much of a risk if you're not planning on buying stuff through it, the worst case scenario I've heard of is them locking the account and asking for proof of identity, and I don't think it's actually all that common.