Sure, but:
1. Farmers oftentimes make zero effort to reduce their water usage. There's water reduction strategies they could employ, if they cared, but instead the vast multi-farm conglomerates invest their efforts in securing below-market, oftentimes monopolistic, control over water rights in their area, so they can use use an excess amount. Meanwhile, data center operators are (rightly) expected to engineer extremely sophisticated multi-millions of dollar systems to reduce their usage by even single digit percentages; an amount that some farms might consume in just one day.
2. Not all crops are built the same. Some, we rightly question "why are we growing this". Almonds are the canonical example; they consume utterly insane amounts of water, and the end result is: Almonds. A non-critical food that sits in some back corner of your grocery store. But, farmers like them because they sell for magnitudes more per pound than the more staple crops; its niche produce like almonds that can be the difference between a farm being profitable and unprofitable each year.
3. Many regions in the US have a climate that is just close enough to being able to grow things, like Alfala and Rice, year-round, so long as you utterly drench them in artifically-sourced water during the dry season when we shouldn't otherwise be able to grow them. There's a massive difference in natural sustainability of the seasonal farms in, say, the American midwest, versus the year-round industrial mega-farms of California.
Having grown up around farms my whole life: More people need to realize that the aw shucks poor farmer routine is just a play these usually extremely wealthy people use to justify any greedy, shitty behavior they can. Monopoly on water rights? Oh, so you want to starve? Yeah that's what I thought, as they sip a $400 bottle of wine in Nappa. Farms are quite possibly the most subsidized industry in all of America; while near-universally all farmers will fight tooth and nail for the elimination of subsidies and handouts for everyone else, if you even insinuate you'll take away their handouts, its war and "you're all going to starve" because you "don't appreciate farmers". They complain about America outsourcing all of its labor to other countries, while farming itself has become one of the most automated, labor-eliminating industries in the country, massive mega-conglomerate farms are now ran by three people piloting remote tractors and drones from their barn.