I don't know anything about this, so I can't comment. But sex trafficking and cover-ups do happen; see: Jimmy Savile, Catholic church, Epstein, Bill Cosby, etc.

From a very quick search it seems that the police didn't take several cases serious, and were at the very least rather lax in their attitude. In other words, there's at least an actual crime and at least some smoke. It's not something invented from nothing.

And this is the real danger of this sort of politicized conspiracy bullshit: now this is automatically seen as "politically motivated" instead of actually looking at the matter at hand. People who spread pizzagate-esque conspiracy theories or enable them are very much harming the anti-paedophilia efforts.

Maybe I’m just out of the loop, but I haven’t heard that one, and I find it hard to believe it’s anywhere near as widespread as QAnon.