I haven't started to watch this series yet.
My father (a retired arable farmer) waivers between shouting exasperation at JC's complete lack of ability and praise for the fact that he highlights just how tough farming is and how farmers are completely at the mercy of the weather.
I do think the first series did more for highlighting the issues of farming then Countryfile or the like ever did.
As a farmer's daughter, I have been at the sharp end of comments about farmers all my life. Thankfully I have an "I'm ignoring you because you are an idiot with no idea" button, so I really like this program for redressing a little bit of balance.