I call it "live" roleplaying, and I absolutely love it. Someone mentioned chemistry, which can migrate between posting qualities and ideally becoming associates or even friends in the RP realm. I have tried one Discord only game and it fell through(i.e., I was kicked out) but besides that I have found an additional Discord online game and it looks promising.

To reiterate, I like straight "live" roleplaying, and find it easy to make friends with others because you hang out in the Discord often times enough, and the level of responsibility to be an adult is a welcome aspect, but can lead to drama. All of it could. Same as the boards.