Farming is a necessary activity and in most countries, they are also a politically influential group.
The case for data centers in the age of AI is weaker, and the only effects for the average person are noise, pollution, higher electricity costs, higher water costs, for the ultimate "benefit" of losing your job.
California farms some very non-essential things like Pistachios, that take insane amounts of water to grow. In what's effectively a desert.
The necessity of alfalfa exports from water-scarce US states is certainly not obvious. Why do you believe this is essential?