“good law” is still bad
Wickard didn't come up at all in this case. The raisin law challenge before SCOTUS was purely on the legal definition of a "taking."
If more money had been at stake (the total value here is pretty small, the number of farmers affected is also pretty small), the case would have gone the other way. Sotomayer's dissent shows the way. It isn't "out in left field" moonbattery.