I’ve commented about this poor, sad, unhistorically-educated Monty Don chappie on The Landed Underclass, earlier, but Bella Gerens does a better academic demolition job on him and his hypotheses.
Yes it’s nice to play at growing a few veg – even keeping a few chickens, if you can stand the slimy shit, are prepared to shoot, gas or snare the inevitable foxes and hawks (beware of the RSPB Gestapo*** on that one!) and stuff their corpses in your wheelie-bin, and if you can bear, as a metropolitan dweller, to kill, pluck, draw and then cook and eat the poor bastards when the time comes.
I don’t object to play-growing. But it won’t feed a nation of 60 million, no way Monty. You can afford to, but we can’t.
***Hawks are of course quite OK, and ought to be allowed to predate your stuff all they want, but your food-birds are of no interest ot them whatsoever.