In the 1990s (the last time I read the DSM IV regarding pedophilia) behavior, that is, actual child sexual assault or behavioral efforts towards doing so (e.g. sitting down with & Chris Hansen on Dateline ) were essential symptoms for the diagnostic.

That may have changed in the DSM V, but I don't know. In common dialogue, pedophilia was extended to a wider range of cases (those who have developmental experimentation fantasies, those who engage in age play, etc.) By the 2010s, a 23 year old with a 17 year old girlfriend (a statutory rape edge case) would be considered pedo.¹

By the late 2010s, LGBT+ folk were considered groomers for letting kids know some of their peers might have two mommies or two daddies. QAnon was offering conspiracy stories about politicians in the Democratic Party that were part of a pedo sex ring, resulting in an active gunman shooting up Comet Ping Pong, a pizzaria.

Meanwhile the same people seeking to kill gays and trans folk as degenerate child predators were happy to cover for Roy Moore and Matt Gaetz, showing us once again it's less about kids as it is demonizing undesirables, or enemies of the transnational white power movement.

As per with all other actual concerns for kids, the worey about child sexual predators only rose once it was decided people who weren't white men should have bodily autonomy. Once husbands required consent from wives (in the 1970s) and unmarried women were allowed to consent or not consent, did we care about if anyone was fucking children. We assumed it was dads sampling their daughters, which should have been covered by incest laws. Then we went through a stranger danger (🚐🍬🍭) before finding that other adult authorities (teachers, ministers, police) were taking advantage of their access to kids.

We may still be processing societal guilt for ignoring kids... while still arranging child labor and child marriages in some states.

¹ A rant of mine: This edge case drops to a 17 year old and an 18 year old if the teens getting it on if they are the same sex. Romeo and Juliet laws often do not apply to same sex cases