I think worker cooperatives are sometimes bashed too much but worker cooperatives are fundamentally a lower petty-bourgeois form of organizing. Cooperatives can only be an ally to the movement of the proletariat and not a driving force. That said, they might have minor use.

I have been thinking about how to sublate the lower petty-bourgeoisie into the movement of the proletariat. I think it would be cool for a bunch of workers in a worker's state to make a worker cooperative as a startup, make it big and then sell the cooperative off to the worker's state. As long as the land and the banks are owned by the state anyway, the worker cooperative would be financed and largely owned by the people indirectly anyhow.

But in terms of pre-revolution, worker cooperatives may help educate the workers who are part of it, and cooperatives can help ease the transition of class suicide for petty-bourgeois and labor aristocracy class traitors.

There's a bit of a trouble for educating the workers compared to unions due to the class situation and nature of ownership. But I think it would be less harmful for a small business owner to create a cooperative than to go out of business during an economic bust and with unexpected declassing become a reactionary blaming their debt on minorities.

I think the trouble is where to focus the limited time and effort of the communists. It's not that cooperatives are bad necessarily, it's just that it's more helpful and important to focus elsewhere.

I do think some communists get weird about strata other than the proles proper such as the reserve pool of labor, lower petty bourgeoisie and the labor aristocracy. The foundation of the communist movement should be the proletariat but these other strata are not inherent enemies. There's not a fundamental antagonism of exploiter and exploited here.