Evidence claiming red meat is harmful have always been weak.

Good article on the topic:

https://sciencebasedmedicine.org/the-red-meat-controversy/

"the authors state that these recommendations are based entirely on health data, without consideration of environmental effects or ethical considerations regarding animal welfare."

Seems obvious to me that environmental effects of diets should not play a part in dietary guidelines..

TL;DR

have a varied diet. done.