It definitely seems worthwhile to establish communes that have "the land, equipment, and skill required to engage in serious farming" but also nobody is suggesting a vision of food autonomy that's about growing all one's own food or that a commune necessarily looks like a rural homestead. The suburbs seem ripe for communizing various spaces and aspects of life.
But also, just to say it, one person can easily plant fruit and nut trees which will produce more food than that person will eat for the rest of their life. Supposing the chestnuts live even a fraction of their 800 yrs, for example.
Nobody's suggesting we become peasants, you know?