I know folks in the MH field, and the only ones I do know that still use that terminology are either close to retirement, or use it when they are talking to laypeople because they don't want to bother explaining what APD is. Mom still uses it but in her experience, she has noticed a difference between APD and layman's terms sociopathy, so uses whichever she feels is correct given the situation. (Not saying this is the best practice, but it's what I've seen her use.)

But with LKH... yeah, I'd definitely agree with ~edgy.