Very true. While my partner does do chores, it is seen that way by some of my family. He is "helping" me. No, he's doing his part of the chores that we both agreed to how it would be divided up. But no it's seen as polite of him to "help" me.
He is good for it but I feel that the fact that I have to say that is evidence of the problem. I don't think the same would be said of me because it's expected.