Similarly flawed arguments could be made about how steam shovels would create unemployment in the construction sector. Technology as well as worker specialization increases our overall productivity. AI doomerism is another variation of Neoluddite thought. Typically it is framed within a zero-sum view of the economy. It is often accompanied by Malthusian scarcity doom. Appeals to authoritarian top-down economic management usually follow from there.

Technological advances have consistently unlocked new, more specialized and economically productive roles for humans. You're absolutely right about lowering costs, but headcounts might shift to new roles rather than reducing overall.