You would have to have been hiding under an extremely large rock not to assume this given the technology involved and Meta's overtly and consistently anti-privacy stances and history.
[inserts image of a smiling Mark Zuckerberg walking in the middle of unsuspecting attendees wearing VR headsets]
That image always felt dystopian to me
While true, that doesn't make it acceptable. In a functioning society, companies would be punished harshly for this behaviour.