it is not very clear from the article how these people managed to achieve such high profits. Because of a big demand for organic food? And due to their proximity to a large metro area?
As of the technology they are using, it is not that special... my parents used to have an extensive vegetable garden (as a consequence of living through a very hungry period of the USSR collapse). When I was still living with them, about 20 years ago, they already had these technologies: walk-behind tractors, vegetable pairings, composting, hand tools. They could feed 4-5 ppl family but that was it. I remember it required A LOT of manual work non-stop all year around. We, their grown-up kids, were highly suggesting them to stop brother and simply go to the local market and buy the food there. Pretty much the same price, much less labor.
I want to say people left farming for a reason and it looks like now the new generation either does not know or forgot how hard it is to grow food.
Interesting to see the contrast - on one side, the funded Silicon Valley "everything you need in a (very expensive) box"; on the other, just a few people sharing knowledge they've acquired through decades of practice without using any significantly new technology.
My money's on the latter when it comes to long term impact.