It's a little tough to describe the distinction so I get why it's misunderstood, but demisexuality isn't about choosing to not have sex until emotional attraction is there, it means the sexual attraction doesn't exist in the first place until the emotional connection is there. I thought I was asexual for a while until I met someone I felt sexually attracted to. I grew up with a lot of emotional neglect and abuse and I'm willing to admit it might be related to that, along with my autism. It could definitely be somehow related to a reaction to a hypersexualized culture too. It wasn't a choice but I can see how certain things probably influenced it. Including the asexuality umbrella under LGBT muddies that, because it's so important to say LGBT people were born the way they are, people bristle at the possibility that trauma might have caused something they make a big part of their identity. Like how a lot of people considering transitioning should probably be focused on healing from trauma instead. I think the rise of encouraging children to transition is related to constantly pushing the prevalence of childhood trauma under the rug. It's easier to believe a child was born in the wrong body than to admit they're traumatized in a society refusing to help them heal from it. And we cause more trauma by closing our eyes to the truth. It's sickening and I'm glad groups like this exist to openly discuss it.