that's been done many times on the forum as well
why is everything unacceptable when I do it
Because those times, it was probably said to someone who understands sarcastic comments on the internet, or maybe no one was around to call them out on it
It's mainly just a matter that you made said joke in a topic where such a comment wasn't needed, and then you pointed it out to the person who didn't get the joke in a way that's usually seen as a ruder way to do it, things may have gone a bit smoother if you just said "It was a joke", or something
It's not always about you, it's also just a matter of time, place, and whoever's currently online and browsing the forums