It's a already solved. It's called the farming industry.

All these small permaculture farms neglect to mention that it's way more labor intensive to maintain than regular farming (the one with big tractors and pesticides). Farming is hard physical work - so if you are in poor health, then what? Just starve, I guess.

Try this next year as an experiment - grow 25% of your yearly calories worth of potatoes. Doesn't even have to include your family (if you have one). Just for 1 adult person. See how "sustainable" that is for you in terms of labor.

Also not sure what this has to do with tire microplastic pollution. The 2 are kind of orthogonal.