I’m trying to give you the benefit of the doubt, so I’ll edit this comment if I find more relevant information, but so far I’ve only found one paragraph related to food inequality, and it seems to disagree with you:

the figures shown represent average nutrient levels on a per capita per day basis for the USSR as a whole. They do not indicate the differences that exist in the diets of different population groups, which preliminary research indicates are substantial.

Labor of any stripe is abundant. In an economy that doesn't prioritize profit, people would be able to pursue specialized jobs that they want to contribute towards. For example, after the modernization of the USSR, they had the most doctors of any country in the world and healthcare was made accessible for millions of people. Our growth as a society is limited by the amount of cooperative labor we have available, but it's not a limited resource.

In contrast, capitalism is reliant on a reserve pool of labor to keep wages down. If someone remains in the reserves for too long, they become homeless because every aspect of life has been commodified.