I'm not exactly a member of either community, but my understanding of drag is that it's performance art. My understanding of the leather community is that it's (1) a cornerstone of gay male culture, and (2) the polar opposite, in terms of sexual preferences, of the things people normally see as child-abuse-adjacent.
You're entitled to whatever opinion you have about the age appropriateness of "preschool leather daddy," if that's a thing that has ever even existed. But I see no reason to enshroud that opinion in the same old tired fearmongering tropes about gay people.
Personally, I believe that road leads down to the normalization of pedophilia, which is a stated goal of certain queer activists. I think we need boundaries, it's not actually helpful to "look the other way" and perform extravagant mental gymnastics to convince ourselves that it's not pedophilia when it looks like pedophilia.
None that I'm aware of. Given your own stated recalcitrance to actually search for resources and information about these things, I suggest (as gently as possible) that you're way off base here.
If you want to actually make a difference, educate yourself on the very real harm that is done to children. Volunteer for anti-child abuse organizations. Advocate for real policies, such as banning child marriages across all states. Call your government about the hundreds of migrant children that ICE just "lost". Advocate for the removal of domestic abusers from police and civil servant positions. etc.
If this was about child marriage, I'm sure many arguments along the lines of "it's part of their culture, we need to respect it" can be made. Indeed, such things are normalized in certain cultures. They are not even considered child abuse. I suspect we are early on in a trajectory where we are normalizing child abuse under the guise of supporting LGBT. What we decide now matters not so much to the children today, but in the indefinite future. Human morals appear to be quite flexible in that regard.
There's no need to invent gay people clandestinely abusing children as if straight people don't openly abuse children already. Like I said, marrying underage children is legal, and it certainly isn't the lgbtq people that put that law there.
Drag queens have more to do with clowns than with sex. I can't see anything wrong with drag queen story hour.
Pro-pedophilia activism has existed within queer activism since its inception:
https://www.youtube.com/watch?v=n-NseFg2kno
It has been sidelined for obvious reasons, but it didn't disappear. The issue didn't disappear. The people didn't disappear. So let's not start with the assumption that it must all be innocent, no matter how fucked up.