This is a really terrible idea and you touched on why, mainstream websites that aren’t compliance with the law do things like make sure there’s no children on their website and other such things but on regulated sites who the fuck knows what’s going on and I don’t even want to find out. It also can’t restrict someone who’s younger finding an adult will verify it and have a place, which could lead them to some dark places if they’re looking for an adult who would Age verify for them on a porn website, or even just any social space online now