They're the riled up activists using their kids as political messaging tools. You'll see them off frame encouraging the kids.

It works well until the child is old enough to think for themselves. Then about half the time the kid is going to develop their own ideology, start seeing the holes in the parents ideology, and begin to resent the parent for using them in this way. Depends on how far down the rabbit hole and crazy they are though. A lot of the parents that go along with this don't see it as degeneracy since they're well into drinking the pop-culture cool side which tends to gloss over the more unsavory elements of all of this.

Like I'm totally on board with "let's not bully the gay kids or the kids that identify as transgender" that kind of cruel bullying is wrong regardless of who you are doing it towards.

But I'm not very accepting of the gay kids, or the transgender kids, not because I hate them, but rather I find it very very odd that anyone below the age of puberty would have a public facing sexual orientation or identity. And I see it as a very pointed red flag for potential child abuse.

Teenagers are slightly different. I might believe a 16 year old that tells me they feel gay is not being unduly influenced by others. But I'm not sure what we accomplish as a society by celebrating sexual orientations at all. I think in general shining a spotlight on people's preferred nocturnal activities merely leads to less total social cohesion in general.