There are some cases where I have made factual errors in which I'd like to be corrected. Like, if a necessary condition of my not wanting to date someone is "I don't do long-distance relationships and you are about to move to Bangladesh", and in fact the person is not about to move to Bangladesh because there was some change of plans, this is in fact a fine time to notify me. Or even "my model of you implies that you would, under $circumstance, do $behavior, even though I've never directly observed you in $circumstance".

But yes, if it's "you have $personal_characteristic", offering to change it - unless it's really trivial, on the order of "you use the word 'splendid' annoyingly often", which would rarely if ever be the whole reason anyway - is not a correct answer.