Care to elaborate which you think are fascist?
Regarding age verification I think that things we generally don't allow kids access to in real life could make sense to age restrict online as well. Something like gambling comes to mind, and I wouldn't personally consider it a fascist action to limit access to that.
Edit: again, under the prerequisite of properly implemented zero-knowledge proof so the site only knows if you're old enough but not actual age, name or anything.
Old enough