Yeah, except this slider doesn’t lack context. It has the well known symbols for ‘male’ and ‘female’ on either end. When you slide it to ‘female’, it goes up in pitch. When you slide it to ‘male’, it goes down in pitch. That reinforces the correlation of high-pitched = girl and low-pitched = boy.
Could it maybe lead to someone looking up why it became a slider, finding this article, and maybe looking up some things? Sure, but there are better ways to learn about this sort of thing if they were willing to put some effort into giving a damn. I’ll go as far as to say that anyone who’s managed to avoid knowing that trans people exist is, at this point, demonstrating willful ignorance. Granted, a lot of the more well-known trans celebrities follow the binary, but we’ve been all over the news and TV lately. If anyone needed a jumping off point, that would be it.
What you’re positing is only maybes. I’m straight-up stating the fact that this negatively reenforces a stereotype that’s harmful to actual, living trans people, and that the devs shouldn’t get to pat themselves on the back for it when queer developers are doing more and getting less recognition for it.