Ever seen someone doing their “unskilled job” all their life? It’s just fucking magic!
The truth is that capitalists hate skilled workers, because those workers have bargaining power. This is why they love the sort of automation which completely removes workers or thought from the equation, even if the ultimate solution is multiple times more expensive or less competent than before.
Nothing is more infuriating to a boss, than a worker that can talk back with experience.
Of course people tend to get better with experience. But the retail worker who gets trained in 2 days can be reasonably good at the job within a few weeks and an expert in a few months.
Compare that to the years of training required prior to the first day on the job for an engineer or a doctor, who also get better with experience.