Don't look at it as robots as much as automation, or "smart automation."
Not is certainly not just unskilled labor.
Law: legalzoom.com is the first of many automated lawyers. Need a make a will? Need to form an LLC? Need to make a simple contract? You don't need an actual lawyer for the simple stuff anymore. What is regarded as simple those is rising over time.
Education: Regardless of the popular opinion of the University of Phoenix and other online universities, recorded lectures are still replacing professors in rudimentary classes (i.e. the 101s of the world). Instead of teaching a class of thirty in a classroom, a few grad students can--and are--operating courses of 125 or so, with homework built in to go along with the recorded lecture of a great professor who is dead for all we know. Students submit questions, they answer it. Recorded lectures and FAQs can teach 90% of the course-load for the low-level classes.
Medicine: What about doctors? Two years ago Watson (the IBM supercomputer) was the size of a living room, now it's the size of a stack of pizza boxes and is 240% faster--in only two years. IBM is putting this know-literally-everything-bot in hospitals and it is having amazing effects. Not surprisingly, it is making better treatment recommendations than doctors and saving money and time in the process:
Researchers say AI prescribes better treatment than doctors — Tech News and Analysis
This will all have good consequences, much like capitalism did with agriculture, textiles, and manufacturing. The cost of all of those things should plummet and be more readily available to everyone....but make no mistake the individual skills are being automated and there is no telling what smart automation can do. It'll be a whole new world.
The immediately scary part is that it won't completely replace people in these fields, but it replace some. We don't need that many lawyers anymore for a number of reasons; classroom sizes will increase as automated curricula are more effective; we won't need X doctors per person, we'll need .75X doctors, and they'll be 500% more effective. That's what capitalism does, makes people more effective with the use of capital-intensive machinery/technology.
I disagree entirely. I don't even think capitalists say that. The reason Walmart employees are paid so little is because their job is sooooo simple, skill has been almost completely replaced. They don't need to even be able to make change correctly (or 100% of the time), the computer tells them! They don't need supply chain managers in the warehouse constantly calculating how much XYZ stores need, the computer immediately knows once the barcode is scanned in the store--the computer prints out the order form and the trucker drives it there. When automation happens, wages fall or remain stagnate.