The post I was responding to did refer to the sandwich comment as a "joke" and jokes are generally defined to be "funny." I would not consider the sandwich comment a joke, myself, since it doesn't fulfill the criteria I have for a joke, but apparently the poster I was responding to does consider it a joke (even if not one he likes, per se). Thus to the poster it does fulfill the criteria for a joke, whether good or not, and thus it is not inaccurate to rephrase those criteria, including funniness.

The poster characterized it as a joke, but did not say that that excused it. Your reading of the post as defending every aspect of the situation is what I object to.

And unfunny, bad-taste jokes are still jokes. I can talk about the KKK member's standup routine and call his words jokes without saying that I found them funny.