The widespread assumption that trans gender identities are inherently sexual whereas cis identities are not, despite the fact trans identities tend to arise at the same childhood age and before any form of sexual interest or development occurs, is testament to cis-het people's insistence that theirs are the only "natural" identities and everybody else's are "fetishes," as well as their tendency to view gender in inherently sexual terms due to patriarchal programming.

This is also why cis people tend to disbelieve in the existence of trans children: because they see trans identities as inherently sexual, they believe they must then be "imposed" on children.

The idea that trans kids have a gender identity as natural and real as a cis person's simply does not compute to people who have been conditioned to view everything about gender in sexualized terms.

It's frequently futile even having these conversations with cis people who haven't examined their assumptions because their status as "normal" is extremely important to them.

It's why even so-called allies become squeamish about gender affirming care for trans kids and will often couch their support for trans people in "live and let terms" for "consenting adults" only.

Because they think being trans is all about fucking.

@gwynnion I have a more concise and less charitable take on it, which is that a lot of my fellow cishet people have their minds in the gutter and they assume that everyone else does, too.