Meta XR headsets are very cheap for the performance they give. Unfortunately they require a Meta account and one can assume as much data as legally possibly is sent back to the advertising company.

For years now, since the Quest 1, those Android devices have not been rooted except for some specific version number of the Quest 2.

This recent work https://github.com/FreeXR/eureka_panther-adreno-gpu-exploit-1 makes the latest headset with a rather recent update (but NOT the very last ones, so be cautious!) rootable.