I have, in desperation after living in a low fertility dirt area (Closest patch of medium was 2k blocks away, which I only discovered 1 month away from winter) survived winter off a few dozen 50L barrels of various wines and beers + whatever else I got.
Which is another reason I object to this change. If you don't spawn in a spot with good soil, regular farming is screwed. To farm, you either have to travel to find a new base, travel to get medium fertility, or you delete and retry for a better world. If berries are subject to this, then even that is gone.