Again, I don't see any LGBT-related subject that cannot be discussed in SD or the Chat subforums.
As someone who happens to be under that category, I don't see any reason why discussing my personal issues would better be in an LGBT forum rather than in the private chat forum, where personal issues can be discussed. It's worth the same as the "straight" personal issues, whatever that is.
Someone didn't want to bake a cake of a gay couple? Fine (but not fine), let's discuss it in the SD forum because this is a serious thing to debate, which is basically the purpose of a forum. Some will agree, some will disagree, but that's how debates go and what the forum is for.
Opening a subfolder to eliminate criticism/disagreements/opinions will just put people in a bubble, a warm and cozy one, but nonetheless delusional.
And technically, most of the members just follow the "Last Posts" page and go posting in the threads they want, debates will happen about issues no matter in which subforum the thread is created - the arguments don't discriminate forums