Seeing as how these companies get hacked all the time, (https://krebsonsecurity.com/2026/09/fbi-probes-service-selli...) , I don't think it's unreasonable to resist this.
Furthermore, I think many folks have reservations about requiring an ID checkpoint to utilize a computer. Obviously it's not that bad yet, but I don't think it's hyperbolic to state that the landscape is certainly trending in that direction, and it's absolutely not unreasonable to point out that governments and institutions to have a material interest in setting up access controls on who can and can't use the internet (read: participate in society).
Which is why the people trying to do it always pull out the misdirect about ZK proofs. Those don't fix anything because a system that actually preserved privacy wouldn't be able to prove that the user is over 18, only that someone is over 18, not necessarily them. And that in turn means you're setting up a rug pull. You roll out a system which is indistinguishable from the perspective of ordinary people from the one that screws them, and then that system can't actually exclude minors so what follows is calls to change it to stop protecting privacy, at which point the people trying to collect everyone's ID will be arguing that you already have to show ID.
It also presumes you would even get a privacy-preserving implementation to begin with, which a pretty credulous assumption given how these things usually go.
Exactly. Which in turn requires you to have some way of tying those accounts to that ID, which was supposed to be the thing to be prevented.