If the site exists to provide support to crossdressers and their families, then it has to be open to all forms of discussion about crossdressing and it's ramifications.
Any limitation on discussion, or on who 'qualifies' to discuss crossdressing, surely undermines the point of the site. As you acknowledge, we live in a society that restricts our ability to talk freely, so why place restrictions here? Surely this should be a refuge from any prejudice or conversational boundaries?
As Reine has already stated in her usual insightful way, we all experience crossdressing in different ways, and I personally don't get much out of 'fluffier' threads. I also don't appreciate the members who seek to impose their views on others, but this is a community like any other and we aren't all of one single mind. If a thread doesn't draw my interest or I don't feel I can resonate in any way then I just tend to ignore it, but I'm glad that this is a place where those threads can exist and that people can talk about crossdressing in any way they choose. I've gained a lot of support and strength from this site and I hope I can continue to do so and hopefully repay some of that support to others.