You're too-kind, Donnie; thanks mate.
I think the boys here would be more-accepting of the gay nurse and firefighter's visitations on the young kids than you think 'though. It's kinda-obvious to most adults that kids below age 10 generally don't pick up on the subtleties of effeminate behaviour in men or "butch" in women. Instead they just see a man or a woman. No GayDar™ developed yet as they have no concept of the whole thing.
It's obvious to me that those against drag queens "edumacating" kids are simply wary of sending signals to the impressionable that choosing to tart yourself up and get around in a dress is an acceptable lifestyle choice for a man. Maybe later on a kid will gravitate to that sort of thing, sure, but in the meantime, during formative years, parents tend to want to steer their kids in the safest directions, those proven to maximise the possibilities of long-term happiness and success.
In essence, I feel it boils down to parents' wanting to protect and preserve those precious few years where one is free to be a kid. Let the growing-up part happen later, naturally, IOW. I'm sure you see this too.