So, as far as I'm aware, this random Twitter account tweeted this out as it's first tweet 24 hours and people are exploding in anger calling it transphobic.
There's even a Reddit dedicated to this concept (although I'm not sure one predates the other.)
I enjoy this concept of just literally making something up because this is as valid as a lot of the nonsense out there.
Feel free to correct me on the history of this term, this is the first I've seen it.