[andrewla]

It is the easiest thing in the world to make it illegal. But while making the sale of alcohol to minors has some teeth, as above, the sale of these "tokens" is so low friction as to be laughable.

This is another of the many many solutions in the "the age limitations that exist currently are easily circumvented" class. While it may be effective in some limited ways, it's not clear that it's better than say parental controls. And it is obviously deficient compared to identity verification solutions that do not preserve anonymity. You can't pretend that this solution is "just as good" when it isn't. The identity verification solution is bad not because it is ineffective at its direct aims but because it has disastrous side effects.