That should have clearly been seen as a way of joking with you saying he disagreed with your point in that thread. It’s a pretty common way of saying “you’re wrong” in a funny way.
Of course context is key. If you’re talking to a woman about a serious topic and you aren’t really close to her, saying that would be offensive. When you’re talking about unserious topics then it would be considered funny because of the contrast of the silliness of the topic