This is unfortunately a typical piece by ideological people completely detached from reality, combined with a public largely ignorant of history (which is an issue with the British education system in which history is barely taught as a compulsory subject).
For instance, people should immediately recognise this:
"the establishment of community land trusts – non-profit, democratic organisations that own and work land for the benefit of local people."
We're entering a period where strategic improvement in national food sufficiency is good. We're not talking juche principle, just a bit better than we do.
Britain will always need imports. It could do better at what it grows for domestic consumption and export.
For instance, people should immediately recognise this:
"the establishment of community land trusts – non-profit, democratic organisations that own and work land for the benefit of local people."
Been there, done that [1].
[1] https://en.m.wikipedia.org/wiki/Kolkhoz