I'm not surprised. Farmers are not happy unless they're complaining about the government. It's always best to give them something to actually complain about.
I'm so sick of hearing farmers say that they barely make minimum wage, and then claim at the same time that they'll be affected by this change because apparently they barely make minimum wage and yet the farm is going to be worth in excess of 1 million pounds. Literally how on Earth does that work?
Somebody came around their properties once a while back and might have given them a number, but that's not the same as it being worth that number. For the property to actually be worth that amount they would have to find someone willing to hand over that amount of cash in exchange for land that makes negligible profit. So basically they have to sell it to James Dyson.
This law will make it unattractive to the likes of James Dyson and Jeremy Clarkson, so will ultimately be better for farmers.