I guess I don't know why you need to bring this up.
I'm fully aware this forum has a lot of trans folks in it. And I am happy to embrace that. But up till now there hasn't been any "please no cis folks" pressure in it, either.
It's not like 196 started out as a trans space. And there are definitely a lot of places that were. And I would tread very lightly in them if at all.
Is it even a bad thing for trans and cis to mix and enjoy things together? Isn't that, like, positive?