Yeah, ace people are kinda used to being everyone's least-favorite coalition-mate. The problem here is that the misunderstanding you and Goldberg seem to have is that you think demisexuality is just a preference for liking your sex partner. It's not. Most demisexuals I know are far closer to ace than they are to your understanding. They are capable of wanting and enjoying sex in a relationship as an emotional thing, but not in what people who aren't ace think of as the physical sense.

And part of this is made more difficult because you're taking the entire category of asexual people and now using a subsection to determine what is or is not a sexual minority. Now, ace people are used to that, because we're used to being made into something we aren't because non-ace people can't accept that we just don't experience sex or sexuality the way they do or that we are alienated by being expected to think about sex and sexuality the way they do. But like all micro-aggressions, the issue is mostly just the constant reminder that our world and our perspective doesn't matter. Eventually, that gets to the point where your response goes from "please stop" to "shut the fuck up, reactionary, I swear to god", because it just isn't worth it to listen to another non-ace person decide they know us better than us.

But fine, I don't give a fuck. I don't care about being in the LGBTQ+ representation tent. That tent is worth jack-all to many of the people in it because of horseshit like this.