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.
I think it has its place. We're a small community, i see the same names around. I've seen op plenty for example, and subjectively never seen you use it. I've parsed it as "something to use when I've got my hackles up with someone i otherwise like."
To the point on people using it to get a lady word in, I've used "disengage" like once myself when i got too hot in here, dunno if i used good tone when i dropped it but disengage per se is neutral