Yet the Torah's permission to consume flesh is unambiguous
"Every moving thing that lives shall be food for you; as with the green herbs have I given you all these" ( Hirsch Breishis 9:3 New Edition P. 222)
The Torah simply equates flesh and herbs! No hierarchy of preference.
R. Hirsch elaborates as to what changed climatically to make this so. Certainly "Eskimos" [Inuit] would be hard-pressed to become vegetarians, and any cold climate could present a similar challenge