Chapotraphouse

Industrial agriculture is not required for human existence, humanity lived fine for millenia without it. Also you could say the same about cars, cell phones, the Internet, electricity etc. Not sure how AI is any different here.

With a global population of 8 billion, yes it is. Unless you are planning on mass starvation or eugenics campaigns, yes industrialized agriculture is required for human existence.

Mass cattle production is not, but under unregulated market conditions it will occur nonetheless.