99.995% of the water use to grow alfalfa ends up in the local atmosphere, to go wherever the winds and/or diffusion takes it presumably eventually coming back out as rain or dew somewhere.

Only 0.005% ends up actually in the alfalfa to be exported to wherever the exported alfalfa goes.

Similar for almonds. I don't know the exact amount, but an upper limit is 0.03% of the water exported with the almond, and 99.97% left behind in the local atmosphere or local ground. That upper limit comes from counting the entire mass of the almond as water.

There are legitimate grounds to criticize growing high water usage crops in regions that do not have enough water naturally, but exporting water is not one of them.

This is the other perfect example I couldn't find a link quick enough. This is for all intents Saudi sucking up water and putting it on a ship to cross the world, because they depleted their sources. Let's generate some more greenhouse gases to accelerate the temp increases.