Nope, it’s because they’re not looking for the same goals as LGBTQ+: a world where they can safely love whom they might love and where they can safely express who they are and their romantic and sexual desires or lack thereof to the same degree straight cis people do without persecution.

Whereas moral pedophiles would not want a world where they can actualize their romantic and sexual desires, so there’s no reason to form a coalition. Honestly, they’d probably do better with sociopaths who don’t hurt people, but I can’t see that playing well politically.