The Netherlands is completely tiny compared to many of the countries people are coming from, and the land is allocated. You can't replace the farms with suburbs throughout the country, and even if you did, then what? Is it allowed to be full then? Or should people still leave their much more land-rich origins to come anyway?

Are the people supposed to eat rocks? Agriculture takes a lot of land but people need to eat.

If anything agriculture is going to require more land in order to be sustainable.

People do need to eat, but over 80% of the Dutch agricultural produce is being exported.

Also, good portion of it isn't even meant for human consumption. Think flowers or cattle feed.

This is not about feeding the population or about sustainability. It's simply about profit.

Are the cows pets?

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.

Well Switzerland is effectively in the EU (economically if not politically) so same standard mostly apply anyway.

well duh let's just import food from elsewhere (and completely ignore that foreign politic squabbles might crash this system)

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.

Economically it would make more sense to import food from France, Spain etc. it would reduce the cost of living for the overwhelming majority of people with limited negative economic impact.

And even without agriculture, a country should be considered "full" long before each acre has been turned into a concrete hellhole.

Does EU have the USA problem where most farmers are basically sharecroppers where they are mandated where they can buy their seed, buy their fertilizers, where they buy their chicks/sows/calfs, what equipment they can buy, how they can repair their equipment, where they can sell their crops, and at what specific prices all from a single undemocratic corporation?

In the USA it's basically corporations that run everything and drive the farmers into poverty where said corporations can then buy their land and rely on undocumented workers to keep the abuse going.

From the outside EU farmers seem to have better labor relations, but don't know.

Swiss here, living in a small town quite close to farmers. I would expect if it was the case here, I would have heard about it, given my proximity. I'm aware of this "arrangement" in the US, never heard of it happening anywhere in the EU - I haven't done a comprehensive study though, maybe someone with more knowledge can say more.

Considering EU farmers tend to riot with their tractors in the capitals of countries which try to control them I doubt it.

AFAIK Norwegian farmers fear of things like this was what kept Norway out of EU even with two referendums (or at least one of the distinguishing factors).