You are basically claiming that a tractor or a machine replacing 25 farmers or factory workers with 1 is not a problem, but a computer replacing 25 tractor drivers with 1 computer operator is. I don't buy it.
Already broke this argument.
Farmers replaced with tractors moved to industrial sector, industrial workers replaced with CNC machinery were dumped to the services sector. But now there are simply no 4th sector to move in.