He "corrected" my statement that the dictionary entry proved the was a verb "horn", when he apparently doesn't understand how verbs (or dictionaries) work. I think that makes him fair game.
If you don't anything about a subject, it's ok to say nothing.
Why are you talking about me in the third person? And rather than take the point that correcting me could be done without personal comment, you add another couple here for good measure.
I was wrong, and you were perfectly right to point out I was wrong. However, there was simply no need to get personal about it in the way you did. My original comment contained no such snide-ness. So, as you choose to defend ill manners rather than just move on, and as I have a low tolerance of boorish and ill mannered interlocutors, I'll simply adjust my forum settings and continue to enjoy the company of those capable of civil discourse. Cheerio.