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Well it's not 'vaguely comparable'. The core point is that technology does not decrease demand for labor (i.e. jobs or wages) because new technology makes things possible that were not possible before. The direct result is that the breadth of human activity increases, and so does demand for labor. The textbook example of this is that 200 years ago, 96% of the population worked in agriculture and now only 4% of the population does. But that does NOT mean the balance are unemployed! More people are employed today globally than ever before in history.

It's a very common mistake to imagine the world has only a fixed number of jobs to go around. Anti immigration arguments and anti technology arguments both use this as the fulcrum of their argument but it's simply a faulty assumption.