[npunt]

Transporting water to grow food isn't default a bad idea, if growing in one place is better than another and makes up for the transportation costs. Growing in warmer climates means crops are less likely to be lost due to frost, and it allows greater variety of crops to be available at different times of the year.

Water management is a huge deal, and we're doing it terribly. Lots of variables to balance, not just water but also resilience to changes in weather, variety available in different seasons, efficient water usage, crop rotation & soil usage, etc. Hard to say definitively any given practice is absolutely good or bad without a broader context of where it fits in the overall package.