I mean it would probably still be someone else picking berries as per the second half of the post. They’re talking at a high level about a system where people do things not to make money for the guys on top but to help out each other.
So someone who likes picking the berries would be the one picking the berries, and you would still get berries.
I mean the point of the original post is that it sucks to do stuff when you line the pockets of someone else just to scrape by, and they get rich off of doing basically nothing.
So in this hypothetical berry picking scenario someone could be picking berries because they are a part of a employee owned coop, they still sell berries, and they don’t line the pockets of some ultra rich berry mogul. And maybe the employees feel good about being able to provide berries to people to buy.
I think this is important to think about regardless of capitalism vs communism. Human society is founded on the concept of humans doing effort to provide value for other humans. And there are people who abuse this fact and try to milk all the value for themselves. Helping yourself is great until you need the services or value of another person.
It all boils down to that old saying “No man alone is an island”. To loop back around to your original question. The berry picker picks more berries then they needs, cause they knows a guy who knows how to fix a lawnmower and that guy looooves berries.