I agree. If I'm sure my problem is not an XY problem, but I think it may well not look like that because it's such a weird situation, I will add all the context

I agree. If I'm sure my problem is not an XY problem, but I think it may well not look like that because it's such a weird situation, I will add all the context that explains how I got there. Then either: I do know what I'm doing, and my explanation satisfies people, and they try to work on Y, or: it turns out I was indeed wrong, and I should have solved X some other way. Either way it's a win for me (if anyone bothers to answer the question). But it can be hard for either new people, or people who don't know the domain well enough to even know that it could be an XY problem.