I also do keto-low carb and IF. I agree with a lot of things you say, and I wrote about it a while back:
How the Government made you fat.The food industry makes money by selling processed products, they don't like that you mainly eat meat (fatty) eggs and butter.
Eating only meat may seem surprising at first glance, especially with the nutritional guidelines that have been sold to us for the last 4 or 5 decades, but eating meat and eggs is much better for humans than eating cereals.
The agricultural revolution was perhaps the most important step in human development. There could never have been an industrial revolution without an argicultural revolution.
I would say that it was a nutritional development that, although not ideal, made it possible to feed many more people. In the same way that mass production and the food industry have made it possible to feed billions of people who were starving before, but with foods that are nutritionally sub-optimal if not toxic in the long term.