Predators go on social media sites to pass off as children in order to groom those children all the time. Don’t feign ignorance at the fact that age verification techniques helps site operators weed those weirdos out.
If this law is enforced, then I'm going to have to upload my driver's license to Hacker News, that is my complaint. And doing this isn't going to protect any children, predators aren't finding children on Hacker News. The law applies to all websites with more than 10 million users (HN is just barely there I think), and to even be able to see the content on HN I will have to submit my papers. If HN doesn't want to deal with that burden, they'll ban Utah IPs and it will become illegal for me to access Hacker News. Doesn't that seem like it's going to little to far?