In reality, the inverse is true; proponents of sane education policy understand that promoting transgenderism among first-graders – too young to conceptualize gender in any meaningful, informed way — is an egregious, reprehensible abuse of authority.
‘Meaningful’ and ‘informed’ are not the same thing, at all.
I’m a trans woman. After I came out, this meant that my brothers now had to explain that to their kids, who were all pre-schoolers at the time.
How did they do it? Simple: basically, they told them that Vgal feels like a woman and wishes to become one. So, it would be nice to talk to her as a woman, and use her new name.
And the kids had no problem with that! Sure, they didn’t know the details and weren’t quite sure why I want that, but whatever; they basically shrugged and just gradually changed the way they referred to me. Not because they were forced to (they weren’t), but because they understood the gist of me being trans and were okay with the change.
That’s the thing with young kids: So many adults think that the kids “can’t understand anything, it would confuse them, how can we tell them??” or that “if we tell them, they’ll be CORRUPTED and want to do the same as <queer person>!!”
Except, no. Unless taught otherwise, kids can be rather uncomplicated about these things, and take them in stride without overthinking it.
“My uncle is now an aunt? *shrugs* Okay.” Kids just don’t care; what they’re really interested in is that you continue to play hide-and-seek or Minecraft with them! :D
Now, do they have an informed concept of gender? No, of course not. But do they have a meaningful one, relevant to their age? Sure! And that’s more than good enough.