> The EU was good for farmers, not so good for fisheries.

It was good for industrial farming, not the farmers themselves, one of the big reasons for Norway refusing to join was the impact it would have on farmers.

I knew plenty of smaller and tenant farmers who benefitted from the EU. There weren't industrial farms around there.

That seems more a feelings than fact based view. The Norwegian referendum had many reasons, but as for Brexit they were not necessarily based on rational analysis. Norway is nominally independent but in every economic sector, including farming, pretty much integrated with the EU countries.