I'm simply stating the fact that just because food production happens outside of cities doesn't mean that most people in rural areas live there for that particular reason. It's a very common counter-argument, that cities need the countryside for food production. Which is true. But cities don't need the vast majority of people living in rural areas for food production, because they have nothing to do with food production in the first place. So it's a bad argument.

As to the other strawman arguments, it's besides my original point, but no I don't think we should forcefully move anyone. But it's just a simple fact that rural living and suburbia are heavily subsidized by the economic engines that are cities. And, accounting for economic production, cities have a much smaller environmental impact per capita.