if homophobic people stopped pushing the "this is for girls, this is for boys" narrative, less people would feel that they identify as a different gender because it wouldn't really mean much to be one gender or another if anything applies to any gender
And this isn't in a transphobic way like gender dysphoria is a thing, but not every trans/nb identifying individual has that dysphoria, they just relate more to one gender than the one they we born into. Like a lot of this is social