@Neil Peart's Ghost Rider: I'm glad we both essentially agree with that one Latina researcher who learned all her English from Barbara Streisand movies.
They want a mostly feminine mentally insane woman with no sense of self, who cut her hair short and uses they/she pronouns in the last one to two years. Oooh she’s a gamer too what are you talking about that’s sooo misogynistic are you saying animal crossing is not a real video game!?! Now she’s going to cut herself and it’s all your fault.
I am 102%* sure they don't want this. Every single slavering session about tomboys that I've witnessed on the internet thus far has never involved them indicating that they want anything near this.
I get that many of the men doing anything up to and including convulsing while grunting out "need... tomboy gf" have given up on trying to seduce women and have instead resorted to dreaming up women like they've stepped into Build-a-Bint, but much of the reason many of those young male nerds like tomboys is because they haven't reconciled with female social peculiarities and want familiar male camaraderie from a woman (
or, they just don't care for the general package of female socialization and figure that a tomboy would eschew the lion's share of that). Tomboyish women probably do have a better grasp of navigating male socialization, but the men who seek the aforementioned also often expect that these kinds will basically be an incidentally female guy. At any rate, they seek tomboys in order to avoid exactly what you described.
What you're describing is
also envisioned by young male nerds-- and sometimes the very same-- but it's a different archetype altogether.
There's also the reality that nerds have become the kind of people who are hungry to connect one thing they know to another thing they know regardless of how tenuous the connection is. Accordingly, many (most?) of the people who strictly fetishize the tomboy "aesthetic" will categorize anyone with certain aesthetic features (e.g. short hair, visible abs, tan skin) as a "tomboy", which
does mean that they may identify as "tomboys" women who take on the expected "non-binary" spectrum of looks.
*
with a 2% margin of error