Not in the sense that there aren't enough people to work, because there are, but because there isn't enough human labor willing to work at economically sustainable prices.

There are categories of foods (e.g. many vegetables) that aren't economical to grow because they (1) require manual labor and (2) the price of that manual labor must compete against alternatives (soybeans) that require less.

If robotics + AI provides working people-less solutions, then suddenly those crops become economically viable to grow again, which also opens up the land that might be unsuited for heavy-mechanized farming (flat, rectangular).