I'm just telling you the joke was triggering to me and I'd appreciate a content warning. Intentions don't matter for that request to be valid, although I am happy that you didn't intend to imply anything bad.
I'm not going to continue the argument about whether the joke was in bad taste or not because you're right we should just agree to disagree.
If you don't add the CW and spoiler tag, I guess I'll just block you because a person I'd want to interact with would take my request at face value and just comply.