growing problem
I don't think so. I think there's always been a larger undercurrent of pedophilia than people realized or accepted. In many cases, it's basically "mainstream" like how a lot of female grooming (removing body hair, getting rid of wrinkles, etc) is about appearing younger and childlike.
Some of the issue is also that teens are just a bit more sexual than we want to believe too. There's a reason why "lying on the age verification of a porn site" is so common, those 15 year olds want to look at boobs just like any adult does. There's a reason why most sane societies have things like Romeo and Juliet laws and allow teens to get with other teens.
Teenagers are horny as shit and we need to stop pretending otherwise. The issue with all this stuff lies with predatory adults who come in and try to exploit them in their naivety.