I have to conclude that this person consistently pretends I have said something else and then argues against that instead for one of three reasons:
1. He doesn't know he's doing it. In other words, he is sincere in his attempts to debate, just incompetent at it.
2. He knows he's doing it and does it consciously because he thinks it's a valid debate technique. This is dishonest, especially when he later claims he won the argument.
3. He knows what he's doing and doesn't care and is just a troll trying to make people angry. This is juvenile and the way to deal with juveniles who play like that is to ignore them.
I mean, come on -- I argue for a living. I get paid to argue. I know how to have a debate and never shy away from them. If I am walking away, it's because it's a useless fight and a waste of time. It is not any sort of concession, as proved when I continued the debate with others in the same thread.