From what I heard this was an individual (perhaps untreated ASPD would be my guess but I'm in no position to diagnose and not qualified anyways) who gains something out of controlling, dominating, abusing, and hurting other people. What I would describe as someone with severe dark traits in their psychology who seems to have some significant grasp of psychology and the propensity to weaponize that. This is the type of a person who spends months grooming their victims, insinuating themselves into their lives, building dependency, etc.

It wasn't so much from what I recall just wanting people to get into cutting it was more "cut yourself to show you love me enough" or "carve my name into your skin to show your devotion" type stuff.

My point was this person was quite at home like a fish in water in discord, it was a nice hunting ground for them and they were able to gain power and insulate themselves.