I’ve been using my mouse for hotkeys for years, to the point that I feel most comfortable doing that for abilities rather than clicking. But I don’t have anything against people who still prefer to play by clicking on hotkeys to activate abilities; instead, I have something against the people who still treat “clicking on the buttons” as if it were some great sin against playing MMOs. Some people prefer playing that way. How someone else is playing the game has no effect on me beyond actual in-game performance, which is why I neither ask nor care if someone has a sequence of hotkeys that personally comfort me.
Unfortunately, MMOs are what they are, and control snobbery is a thing, with everything from people complaining if you use the arrow keys to move to click-to-move to targeting to… oh, you know. You name a way to control an MMO and I’ll point you to something that someone has decided isn’t a sufficiently hardcore way to play. So what bit of MMO control snobbery bothers you the most?