There are dozens of things wrong with it. We only do it because we are used to it. The only negative aspect of a vegan diet is the learning curve of a few months. Then it's all win.
Saying the world should suddenly abandoned everything about its past because of very recent changes is plain wrong. Progress, yes. Abandoning the past, no.
If customs are found to be bad they should stop. It's not going to happen all at once of course. Demand for animals will start falling. I predict +50% vegans in the West in 2050.
Top soil erosion is s problem you likely have not heard of. Grassland for meatgeazing is environmentally friendly.
I'm sure it's a problem, in some sense, but problems can be solved. Technology will advance agriculture to the point where soil is not needed. Decimating primeval rainforest =not cool.
That that up with the government of those nations. It means absolutely nothing to the subject of how people elsewhere should eat. Cattle grazing is very efficient in some places.
Consumers are responsible for the demand they create in the market. I don't trust government to fix this problem. Capitalism will fix it.
It is fixing it. They mostly grow sugar cane, and with selling that internationally make enough to import other goods. They also grow some produce and let cattle graze.
