Attempts to provide a successful end to a subthread is like taking a long poop.
You’re one half of the sphincter, I’m the other half of the sphincter. The conversation is the shit in the middle.
By pinching the two sides together and minimizing the differences, the sphincter closes and the conversation ends up as a plop in the toilet that we can then flush out of our collective memories.
I don’t have a name for it. But there is a tendency to take a conversational partner off to the side and engage in a verbal sparring of assertion and intention. “You are obviously a [insert disparaging adj/noun combination] who is merely [insert disparaging adv/verb or something otherwise compatible].
The conversational partner is then supposed to respond offended and hurt, and perhaps spar back, either justifying (defensive position) or providing barbs in return.
So, back and forth it goes.
It’s a diversion. I enjoy doing it myself sometimes. For most who play it, it’s a cat/mouse game. Sometimes there is an element of bullying, sometimes not.
For others it can be a very serious affair and they get quite caught up in it emotionally. Those are people who I think shouldn’t play the game at all because they have forgotten that it’s a game.