If my manager/boss told me I had to use some shitty headset from the cancerous entity that is Meta (ignoring that this also means that Meta will now have full body scans of people, as if that's not the worst idea on earth) to be in VR with my colleagues for my useless morning standups I'd quit on the spot and go do something more fulfilling with my life, for example chewing on gravel and sand.
Not willingly? Too many, I unfortunately have to work with Meta's horrifically terrible APIs and every time an issue crops up related to their APIs (nearly daily) I say a silent prayer for that company to disintegrate into nothingness.
Willingly, basically none, or as few as I can realistically manage. I don't have a smartphone other than a burner one with GrapheneOS for my bank app, run linux on everything else and my work MacBook sits idly in the corner somewhere with 0 battery in it despite protesting from my manager.