I suspect there may be more truth to that comic than we'd like to think. Although I'm sure sexbots will replace most of those jobs, too.
But yeah, actually, as someone who studied A.I. about ten years ago and still works in the field, I'm both amazed, excited, and terrified by the progress we've made in the last decade with just incremental technological increases in GPU power and small modifications to existing algorithms. I'm not worried about an A.I. destroying humanity any time soon, but I think there will be major political-economic disruption on a scale that will surpass that of the industrial revolution. This is the start of the first time human workers will become truly obsolete. Of course, some things will be holdouts (like academic work, programming, social work, and the arts), but over time those too will be replaced by superior A.I.s to an increasing extent (I thought maybe art would be a holdout, but look at a website like ostagram, or at the New Rembrandt, or listen to any of the various music producing A.I.s and you start to wonder). I worry that, unless we prepare for this in a major way, this will cause a massive divide between the "haves" who are the last remaining human workers and those who control the A.I.s, and the "have nots", who will be a mass of unemployed people with no source of income or means of survival. And while it may not happen this decade or the next, I think people might overestimate the long-term timescale of this. My guess is I'll see at least the beginnings of this in my lifetime.