Much as I like the general idea: What you're describing has been tried before, hasn't it?
Sometimes successfully, sometimes less so, a successful example being the kibbutz movement and the most obvious failure being large-scale communism. Even feudalism can in some way be considered as a manner of providing basic income.
The problem is: How do you accommodate everyone's personal gifts, passions and proclivities?
Not everyone's a farmer or a physician, so not everyone's of practical use for your proposed commune. This is likely to create envy and resentment.
Except that doesn't seem to be what he is proposing - you don't have a coop to assign labor, you have a coop to control wealth to provide livelihood. The membership does whatever it wants, the coop will, if necessary, pay people to farm its land or manufacture its textiles, but the cornerstone of UBI is that as automation advances the amount of human labor required for any of those constituent parts of livelihood will continue to approach zero, and when it does, you now have an apparatus of the means of production that provides for all your members needs.
Bootstrap a basic income.
We don't need to wait for the state or the multinationals to have mercy on us. I don't think they will. We should take matters into our own hands.
My idea is that people should create non-profit associations for the purpose of assuring their basic necessities. These associations should buy land to farm, own factories, organize their own education and health systems. Being owned by their founders, such organizations's sole purpose will be the well being of their creators.
In order to work out, these co-ops need to become independent of external conditions. They need to have a full stack of services, just like a country in miniature: they need to have farms, factories, hospitals, schools and domestic homes.
When the robot age will finally come, people will find it very hard to find a job. In the past, people could trade their skills and effort for money, but now, they have nothing to trade for. So the only solution is to rely on themselves, not on the new economy which doesn't need them except as consumers, or on the government which is too large and too corrupted to be trusted. We should boostrap our own basic income.