This argument strategy, where you make a strained analogy/metaphor, and then apply it back to the original topic - it's fragile and depends on how comparable the two ideas are. If you're just interested in winning discussions, it's a bad tactic because it opens up a whole new avenue for your opponent to attack.
Can I COPY nurses into equally valuable robots? Because if I can, then yeah - the world would be a MUCH better place with abundant and affordable nurse robots, and the human nurses can go find other jobs. I have some friends who are nurses, and after watching them fight with the medical system for their own health issues, I'm pretty sure they'd agree.