Even with the proposed reduction in the amount of farm animals the Netherlands will still produce more than enough meat and milk to meet domestic demand, and the reason that construction can't continue is precisely the excess nitrogen emissions produced and the physical space consumed by by the farms. The country simply isn't large enough to not make this tradeoff. And if you don't care about the biodiversity, sooner or later you'll find out that you can't continue with agriculture at all because there are no pollinators left.