While artifically raised wages can certainly cause that phenomenon, are you saying that's the only way it will happen? What about the possibility that this technology is more cost-effective than paying a worker the lowest amount of money it would take to get them to do the job? If so, then it's a situation where an uninflated wage is still sufficient to replace the worker with technology.

Besides, doesn't this just point to the need for more widely available basic technical skills education, so that the guy who would've been working the cashier in Taco Bell could instead be the guy to fix the iTaco everytime it breaks, which surely will be often? Or perhaps to coach customers through using it, as airlines still need desk employees to do where automated check-in exists...

Good thing; getting rid of crappy jobs faster is better. If a person isn't willing to value themselves high enough to ask a decent wage, the minimum wage (or union negotiated wages or whatever) forces them to value themselves at a certain point. It places an expectation not just on employers but on people that to be fully a part of our society they must achieve a certain amount of utility to make themselves worthy of the minimum wage the society determines.