Exactly... the real problem is how they're grown.

Frozen vegetables are less nutrient rich compared to fresh vegetables, because they lose nutrients while being frozen. And to be honest, frozen vegetables are frozen in the first place because those vegetables would have gone to waste otherwise.

So not only is their original state already compromised, they're then even more so when they're frozen.

Freezing itself does not lower nutritional value.

Furthermore, if a produce purchaser is going to freeze, they freeze as soon as they possibly can to limit any spoilage or degradation, which hurts their overall profit. Frozen fruits and vegetables have typically retained their nutrition much better than "fresh" ones that were shipped from out of state.