Besides being a 'pharmakon', meat is also a 'pharmakos' (scapegoat). As the most symbolic of all foods & as a predilected carrier of meaning, it acts as an adsorbent of societal anxieties. Often presented as scientific 'truth'.
There is something seriously rotten in contemporary nutrition. The entire chain-of-proof is no longer based on the scientific method but is profoundly corrupted by vested interests and ideological dogma.
Except for the Daily Mail-like headlines, it all looks pretty convincing. The meat-is-bad narrative is now supported by official institutions such as the WHO and the AICR. Which seems to end all debate.
First, let's put aside the myth that plant-based makes you healthier. Those claims are based on weak and biased epidemiological associations (RR=0.8-0.9?? - seriously, that's just meaningless).
The best plant gurus can get out of more controlled studies is the fact that it lowers total cholesterol and LDL-C. But, that's just another belief system - no point wasting time on the meat-gives-you-clogged-arteries propaganda...