Around here PYO died a death with the advent of cheap, itinerant labour. Crops, like strawberries, were more profitable picked cheaply and sold on.
Cereals, oils like rape, fodder need much less manual labour so some farmers are switching to those.
Others, having invested in poly tunnels etc are looking to a return to PYO.
Will some things become less available? Yes, no doubt. Will there be food available? Yes.
It was your statement that farmers are cutting back on plant growth that I wanted to correct. They’re not. They are adapting. Actually more land is being turned over to crops around here now that the various EU set aside schemes no longer apply and there are Sustainable Farming grants available.
It’s a time of change. Personally, I like to have facts rather than rather dramatic inaccurate statements.