I know it’s a shipost and this meme is at least 15 years old. But meat, cheese, and white bread (especially the ones in the US with added sugar) were never healthy

meat, cheese and bread were never healthy, says a man descended from 10 thousand years of meat cheese and bread eaters

it’s about the scale at which these items are consumed - eating meat every day was pretty much unheard of

Was it capitalism or was it refrigeration?

Fresh or preserved (salted or dried) meat has existed as long as people have paid for them. Even ice was used for a while prior to refrigeration.

Salting and dehydration is not as efficient as refrigeration. Not even close.

You are totally missing the point. American?