The only thing PH doesn't seem keen on is compromising their users' privacy and serving as age-enforcer.
So this legislation seems to make things worse, not better. Sure, you can always say "well PH could just comply with the age-verification laws," but I applaud them for taking a stand on privacy, and also them saying "fine, if you don't like us here we'll leave." It's really a loss for exactly the states that are passing these laws. They'll just end up with people going to shadier sites.
What worries me most though, is that this will lead to people using VPNs more (which is fine), but then states making VPNs themselves illegal (they'll use terms like "tools to circumvent...") which is super bad.