Earlier quoted context omitted.
The Dutch disagree. (Not just now, but also historically.)
Except that the Netherlands aren't rich because of their agriculture. They're rich and happend to be good at agriculture on the side as an added bonus.
In any case, have a look at https://eh.net/encyclopedia/the-dutch-economy-in-the-golden-...
Agriculture has been important for the Dutch for a long, long time.
See also https://en.wikipedia.org/wiki/British_Agricultural_Revolutio... which arguably allowed Britain to become the wealthiest place on the planet for a while.