Earlier quoted context omitted.
That's called the Lump of Labour Fallacy. What's the fallacy called of thinking everyone in the world can just retrain as a webdev? The jobs of food preparation and delivery still need to exist, but we don't need to grind them into the ground, that's a free choice to do so made by VC-backed startups.
Who says they need to retrain as a webdev? I have no clue what the jobs of the future will be. Just as people in the past scarcely had a clue about the jobs of our present.
Which means automating people away pushes some of these people into poverty, and the only hope they have is that their children will start a profitable career in a sector that doesn't get eaten by software in the next few decades.
That's not to say I'm against automation and improvement. Just that not much thought is being given to individuals who find themselves automated away. That there will likely be a job for them is not much of a consolation prize over no job at all; hell, in civilized countries with developed social security, a job may be a worse option than no job at all.