I know it's a cliché with speedrunners at this point, but I just stumbled upon a nest of them, and I feel the need to share.
https://www.mariokart64.com/mkdd/womenaf.php
Top rated "women" in Mario Kart: Double Dash
1 Mattilde Feuillas (originally Mattis) Trans
2 Rebecca Chaneski (https://www.twitch.tv/ideas_xo/clip/DeliciousProudChimpanzeePartyTime-1hrDM1p81f1Tz4AP) you decide, but those hands are a lot bigger than mine and I'm a guy.
3 Mia McMullen (originally Matt) Trans
4 Ivy Rose Aslinger (originally Caleb) Trans
Its like the southpark strong woman competition where the podium is full of dudes with long hair.
Also Concerning is
8 Charlotte Crego (originally Cameron) Trans and 13-14 years old
All of this information is relatively easily accessible on the forums.
But seeing as almost all of the active "Female" players are...
It makes me suspicious that there's some "recruiting" going on behind the scenes.
Yeah, that is 100% a dude, no question. I would bet my life on it.