I'm using https://github.com/basti564/Oculess which works well for removing facebook. Caveats: * most of the UI is broken * you can only run untrusted sideloaded apks * some telemetry services have to be stopped after each reboot * you might still need facebook for initial setup (haven't tried it)

There is this https://github.com/basti564/Oculess

Haven't tried it myself, and it has some caveats, but it does make it possible to use the Quest 2 without Facebook.