I’m rooted with GSF, revoking some permissions forcibly from Play Services (most notably location access) causes the device to reboot, and the permission gets restored forcibly.

This never used to happen previously (the permission used to get revoked successfully, and things like Google Timeline would act as if your device had disappeared despite location being enabled). I assume a background update implemented this permission recovery mechanism - i’ve since disabled play store on my device and slowly been culling off my usage of other Google apps