"Beef: roughly 70–80% of people eat it at least occasionally
Milk and dairy: roughly 85–90%"
Ketogenic diet is a band aid to both, not a solution, and plants are not the cause of either problem, either.
Chicken, for example, produces 10% of CO2 per kg of meat compared to beef.
But mainly, beef and meat is not the same, cattle needs way more ressources than chicken for example, or well, insects.
Also dairy is not a meat.
Hardest part is knowing implicit animal ingredients you might not otherwise guess, which almost tripped me up when I visited the US and (as a vegetarian*) almost bought some yogurt before reading the ingredients list and finding to my surprise that it contained gelatine.
* it's mainly the cheese; I've substituted out other uses of milk. Also, vegan yogurt is a thing now, not sure when that happened, before or after that visit.
Just looked up the Wikipedia page to check on vegan, and… looks like all the animal and plant "sources" actually ingest the stuff from elsewhere?
Since only bacteria and some archea possess the genes and enzymes necessary to synthesize vitamin B12, plant and algae sources all obtain the vitamin secondarily from symbiosis with various species of bacteria,[5] or in the case of fermented plant foods, from bacterial fermentation.[86]
The mean human has approximately one ovary, one testicle. A few hundred million Indians refusing all meat is compatible with the others not doing that.
https://www.pewresearch.org/religion/2021/06/29/religion-and...
If it’s not, it’s probably just poverty holding back consumption.
Edit: upon second reading, I realize techterrier was probably refuting only the steak part of sudo_cowsay’s comment
https://en.wikipedia.org/wiki/List_of_countries_by_milk_cons...
There was a research, which I can't be arsed to google with mobile, that compared western vegan diet and Indian omnivore and, yup you guessed it, the western version was less costly in terms of future proof.
But as with the zillionaires the human predicament depends on weather we muster the courage to limit ourselves or die to the extinction that's already manifesting itself in forms like forest fires, droughts and crop losses.