Over time it's become harder and harder to deny how bad some aspects of the internet are for people, especially for young people. Whether it's right or wrong it's not shocking that people are more willing than ever to entertain the idea of internet restrictions.
I'd dig deeper on the problem though. More fundamentally, laws like this are based on the fundamental assumption that both children and their parents can't make good decisions and that the state must instead force the right decisions on them.