Seriously how many of us are still on FB? How many of us have friends and family who still are?
Billions unfortunately! Almost everyone I deal with is. I reckon I'm about the only person I know who is not on one form of social media or another and or deeply involved with Google apps/using its Cloud.
I've banned relatives taking my photo because I know it'll end up on Facebook, Google or others despite my wishes to the contrary. No matter what I say I know they can't help themselves (so does Big Tech—that's its modus operandi).
I've come to the conclusion there's no point trying to convince others about privacy, data mining by Meta et al. All I can do is to try to minimize others spilling my personal data onto Big Tech's data collection highways.
I send my parents photos of my daughter and they probably just end up being scanned by their meta/google apps and trained. Where as I try take precautions.
You literally can't opt out of face scanning if somebody else has taken or has access to a photo of you. I should be able to delete my facedata or when it detects its me it doesn't train.