I don't even think you need to believe in hierarchy of marginalized people, all you need is to not want to see killing happen at home because it's icky up close and all of a sudden it makes a lot of sense.
Maybe I'm wrong but I came to this conclusion because it seems people don't care (or at least don't care as strongly) if LGBTQ+ people are killed in oversees conflicts, but care a lot about the idea it might happen in their country.
Yeah, I think I definitely agree with what you've said.
I still assert that people seem to care more about the risk of LGBTQ+ people being killed "close to home" versus them actually being killed in foreign conflicts; however I suspect the reason is probably because the ones "close to home" are white.