I'm just middle aged and lost all energy for unproductive discussions. The second another poster posts something genuinely hostile, like "touch grass" kinda shit, I'm just done talking. Also if we're six comments in and the other guy won't even admit to being wrong to the thing he said on comment one, despite me doing twenty minutes of research to prove conclusively that he's wrong, I don't want to waste another second of my life on him.
I gotta have 10% of the "disengage" comments on this site.
If you want a conversation to stop, especially with a user who's constantly replying or following you. You can respond with "Disengage.", and the user is obliged to stop posting at you about whatever it is. The post has to be a simple 'disengage', rather than trying to get the last word in with "you stink and here's five reasons why also disengage".
Thanks for explaining!