The perception of meat being unhealthy may stem from historical issues with preservation before refrigeration.

“the meat wasn't safe to eat so I'm actually okay with the anti meat agenda in the 1850s 1850s before refrigeration so you throw into that that to try and preserve the meat they salted the meat but the salt wasn't enough so again where do we get this myth about meat being bad for you well actually maybe it was before refrigeration where do we get this myth that salts bad for a small maybe it was before refrigeration because they sold at the meat the salt wasn't as good pork transported badly in comparison with maybe beef so porks worse for you”