Nobody is reinventing the universe, they just want a buffer.

A buffer is a well made item that you can repair yourself, so you're not forced to purchase a replacement.

A buffer is a shoebox with a lifetime supply of your favorite shaving razor.

A buffer is a garden, a pantry of canned goods, a few hens to lay eggs for you.

Each of these buffers insulates the bearer from the effects of supply chain disruption or even unemployment. Walmart could be out of eggs and razors -- but you'll be fine for quite some time, even if you didn't incubate your own chicks or make the razors by hand.

> farms get their input from the ground and sky, but this hasn't been true in centuries

Yes, industrial scales require industrial inputs, but a few hens will happily yield you a few eggs a day while living off your garden scraps and the insects they scratch up. And their waste returns nutrients to the soil -- a boone for a garden.