Maeby: And the worst part is he thinks he’s passing.
Yes, her motivation was make Steve Holt not interested but fundamentally the joke is that Steve wouldn't be attracted to trans woman, which is what happens. Which honestly makes the whole joke worse.
And even if you don't care about that, Maeby's motivation doesn't matter because she still uses transphobia as a way to harass Lindsey behind her back.
I honestly find the whole thing so upsetting and not even remotely funny.