I was in a long-term relationship that fell apart partially because I was ace and my partner was very much not, and every time we looked for relationship help we got told that I was the problem. Not just that a significant mismatch in sexual desire could be a problem in a relationship, but that it was My Fault, Specifically, for not being willing to suck it up and have a bunch of sex I didn't want. To my ex's credit, he cared about consent much more than any of the professionals we talked to and refused to pressure me even when my (lesbian, billed as progressive and pro-LGBT) therapist was actively telling him to.
But it meant that we had absolutely no help or support when we were trying to work on the relationship in ways that *did* value my autonomy. There's basically no advice for people who want to try to make a relationship where there's a big desire gap work that isn't "well you should just have sex anyway" or "just break up lol". And that sucks!
Sometimes breaking up is necessary, and that's what ended up happening with us because there were other reasons we worked better as friends, but there *should* be better frameworks for discussing what people want and need that don't automatically assume that one partner's feelings are automatically more important or valuable than the other's.