but to say that "mansplaining" carves reality at any joints but political ones seems untrue to me.

That's all I was saying. For instance:

I assure you that I am fully aware that sometimes also black people steal from black people, or white people from black people, or white people from white people, etc... but that is irrelevant here, because those acts just don't have the same qualia.

"Qualia"? Goals, motivations, and revealed preferences (that is, the things that separate "explaining" from "mansplaining" and from "splaning" in general) aren't qualia.