Shift is not “heteronormative”, it is a place to discuss MS and to try and make light. As your profile says you are and have been an activist.
Nothing I have seen here discriminates or labels anyone based on their sexual bias apart from your post labelling folk as “heteronormative “ (a word I never knew existed)
Everyone can like what they want, so asking to form a sub group is fine, just don’t discriminate against folk if they have different views to you, cause if I posted to start a White group I would be called out for being racist, which I would be.
If you want a specific group for your community, feel free just don’t make some of us fee worse!