People A) don’t have to use Meta and B) do have a choice between not using a mobile phone by an ad tech company.

People don't have a choice between Facebook and not-Facebook-but-still-has-all-of-your-friends-and-family. Abstinence isn't a choice here any more than shutting off your cell phone service is a choice; true in the literal sense, but only if you don't mind being unreachable to everyone who still has a phone.