Someone Else Finds Me Obnoxious

I clashed with a professor online regarding a few issues, my beef being that I didn't think he actually responded to me and in fact set up strawmen. This was shown in part when all three of us pointed out just that on a matter. I got a bit emotional, but so did he ("we get it" etc.). Felt like I was talking to a wall. Hate that, in part because I support reasoned debate with people I disagree with. I make the effort. But, if they make bad arguments, they can be called on it. I realize this takes some finesse. Can't be an asshole about it.