I wouldn't say it's a kink I *love*, but I definetly enjoy it alot!
I actually prefer doing it irl, partly because it feels safer and because it's more fun to use the sub once they're appropriately wasted. It's also fun to physically make them drink more by holding their glass and to "trick" them to drink more than they think that they're doing (obviously only when you know the sub and you've been drunk with them before, so you know their limits).
Online it's still fun making a sub go "dumb" and either make them say things they weren't planning on saying or send more than what initially planned. I like the complete control of someone's mood too, making them drink water so they think they're regaining control, and then suddenly ordering two more shots so they're now even more wasted than they were before the water.