Unless people are starving, that is not going to happen.
Most people are too squeamish these days to ever butcher an animal and eat it. Even a chicken
Plus, it is actually hard work. It takes physical strength.
...Even a chicken...
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Which needs to scalded, plucked and then have all pin feathers removed after butchering.
Did it years ago. Have a friend who raises them for eggs, hired a local family to butcher and decided the cost and mess was too high to bother. Took 8 experienced people all day to process 50 chickens.
I think red meat and pork is easier to process, especially if you do whole muscle cuts. I have helped process deer and that was after it was skinned, hung, washed, gutted.
Let’s see suburbanites get rid of guts and blood after butchering (you bury it if you don’t have dogs) or let’s see them hang a carcass correctly under cover, cool and in the shade and keeping it washed so flies don’t land. You folks who are decontaminating every surface every few hours will be horrified. It is messy, dirty and stinky. Also tiring.
Never happen. They will instead find a farmer and pay $12/lb for off-cuts to grind themselves. Done that, too. It takes time to grind burger, mix in the correct amount of fat and then clean everything you used. $5 hamburger will look cheap.
Oh: I bet there is a sudden burst of sales of meat grinders!! And knives!! How many people can hone a knife correctly and keep the edge?
This isn’t just a go-to-YT process.