As is, it is the responsibility of the content provider to make sure that they are distributing only to people who are legally allowed to have it.
With age-verification the user has to prove that they are allowed to access the content, then the site can distribute it to them.
Your approach is to distribute the content by default and only deny it to ChildDevices. In order for this to work at all, you have to mandate that children can only use ChildDevices. This is soooo much worse than simply requiring that adults who want to see certain content have to prove that they can legally access it. If adults have reservations about providing ID for pornography, the loss of such content seems to be much less than denying children Internet access. (Although, I’m sure that Lemmings would disagree for obvious reasons).
Your solution is worse.
As is, it is the responsibility of the content provider to make sure that they are distributing only to people who are legally allowed to have it.
With age-verification the user has to prove that they are allowed to access the content, then the site can distribute it to them.
Your approach is to distribute the content by default and only deny it to ChildDevices. In order for this to work at all, you have to mandate that children can only use ChildDevices. This is soooo much worse than simply requiring that adults who want to see certain content have to prove that they can legally access it. If adults have reservations about providing ID for pornography, the loss of such content seems to be much less than denying children Internet access. (Although, I’m sure that Lemmings would disagree for obvious reasons).