After some reading, I did the same. First #block w/o any prior engagement or racist etc. behavior.
The "argumentative" part in connection with your quote pushed it over the top for me.
He might simply not have known. So much happening in #TFG's cases daily.
I like dialogues.
You share. I share. We talk and we both might learn something.
Discussions might sometimes be necessary, but not for discussions' sake. Not in my non-work related platforms
And even there...