So I can't claim to be an expert in this subject -- I've got an acute interest in it but am no professional.

Regarding monounsaturated fats I was going off of some offhand knowledge -- while the AHA agrees with the claim generally[1], it looks like the truth may be more complicated[2].

Regarding the general un-healthiness of red meats:

* There are [3] numerous [4] studies [5] showing a link to an increased mortality rate.

* Red meat was categorized as Group 2A (probably carcinogenic to humans) by the WHO[6]

If there's more claims I made here that I can help to cite I'd be happy to.

[1] - https://www.heart.org/en/healthy-living/healthy-eating/eat-s...

[2] - https://www.hsph.harvard.edu/news/features/monosaturated-fat...

[3] - https://www.bmj.com/content/357/bmj.j1957

[4] - https://jaoa.org/article.aspx?articleid=2517494

[5] - https://web.archive.org/web/20120313084043/http://archinte.a...

[6] - https://www.who.int/features/qa/cancer-red-meat/en/