If shit properly hits the fan, I suspect things are going to be way more desperate.
To be a little more precise, people have studied this question carefully at a planetary scale.
The total agricultural production possible in the absense of artificial inputs like fertilizers, pesticides, diesel tractors, cold storage and refrigerated supply chains etc is around no more than 3billion people running off solar inputs and natures nutrient cycles and the amount of land and water available.
Pretty shocking number if you don't have the context, but here is a place to get started on the information this is based on.
So for example, in the green revolution, land and agriculture technology increased a modest amount, but artificial fossil inputs into the existing technology system increased 90-fold. Most of the gains in food production are because it's now based on fossil energy and nutrients rather than natural sources.
Currently, today ~40% of all the human food supply molecules come from fossil fuels and are incorporated into the plants and animals we eat.
So it's not "just" a land management issue, or urbanization. Humanity is literally on artificial life support. There is no simple, survivable way out of this commitment. Fundamentally this is far, far from penciling out any other way we know how to survive. Humanity population passed some threshold for change around 3-4 generations ago.
This comes from a recent interview you can listen to here or read here.
The absolutely most interesting thing from this interview is not the hash smoking detail.
The part that is more important is that Carlson states early on in the interview that he feels that the American president was being blackmailed by Israel into engaging in the Iran war. Carlson basically comes out and implies that the president is compromised and manipulated and knows it, and he had no choice. He doesn't specifically speculate on how they are controlling Trump. But he says that he's shocked at the media failure to investigate this. Its really worth listening to this section of the interview. He met Trump 3X and deeply discussed Iran in the weeks before the fighting.
The only thing that comes immediately to mind is that Israel has the Epstein files and are threatening to release them. But it could be something else of course.