If they're exporting crops that's about feeding somebody. People who would have to try to get their food elsewhere and have to worry about the standards/quality of those new sources. It's even perfectly fine for people to grow and sell flowers. There may be ways to make it more efficient, and maybe the government should be encouraging that so they can buy up some of the saved land, but I'd bet there are ecological consequences to paving over flower farms too.

Are the cows pets?

It's not like countries that import the majority of their calories have frequent food riots or anything.

There is hardly any need to import food from anywhere besides the EU, though. Which would be rather low risk.