I don't get the comparison with China. They still have an incredibly significant agricultural workforce (like 30% of workers are in agriculture) compared to 2%

I don't get the comparison with China. They still have an incredibly significant agricultural workforce (like 30% of workers are in agriculture) compared to 2% in the US. The US already moved people off farms to factories before WWII and we're in a different stage of economic development. We're not talking about subsistence farming vs driving for Uber here.