I mean, increasingly all of them...

Techpeople who see the problems but earnestly think the solution is algorithmic improvement have to be up there but if I had to pick a worst...

... Journos. Particually liberal journalists. I've come into a depressing amount of contact with them and they're awful, largely un-selfaware, petty, smug, and largely useless in the extreme. I'm not sure I've ever met someone who made a real living from that line of work that I didn't think was simply a liar or an idiot, and often both. This probably a bit 'trust me bro' but it's late I've had a couple, and I need to sleep.