Great question. This seed oil thing seems strange. I maybe can buy there's some marginal impact, but the way it is talked about implies there's some definite, measurable, material negative association. Otherwise, it's like chemtrails to me. Or another food/culture dogma, like Taleb talks about.

https://thesaifhouse.com/fiatfoodsample

https://www.zeroacre.com/white-papers/seed-oils-as-a-driver-of-heart-disease

https://drmalcolmkendrick.org/statin-nation-the-documentary/

if you happen to understand spanish, this is a good resource: https://www.youtube.com/watch?v=MyS2bGBer6Q