The point is that, if the alternative is massive global starvation, we can give up on eating most meat so that that food can be more efficiently be eaten directly by humans instead. And you don't have to give up any of programming, iphones, cars, computers, boats, houses, clothes, etc., to do so.

We've been eating meat _far_ longer than houses, phones, tech, etc. Will be _much_ harder to give that up. Been eating meat for hundreds of millennia

I for one have been eating meat for less than 20 years. Lots of people (not only individually, but culturally) live mostly vegetarian. There is no problem with it.

True, but again, carnivore diets seem to be more popular historically speaking. Rightly or wrongly

You don't have to give up all meat, just temporarily eat less of it.