I couldn't remember much about the biochemistry of Linoleic Acid (LA), an essential omega 6 fatty acid, so I had to get out my old textbooks. (I got the horrors just seeing that old tome again - Lehninger Principles of Biochemistry for any one else who shares bad memories of Biochem.) But in any case, after refreshing my memory I went and had a look at some current literature reviews of studies on LA and I learnt some new stuff.
To whit, it seems Snoidberg's post is not without merit. That said, I feel the marketing material from ZeroAcre is an oversimplification of the current level of research and understanding.( I guess that's not surprising if they are trying to sell you a product)
Moving on: The research does support the finding that the ratio of omega 6 and omega 3 fats in our diet has shifted markedly. There is also evidence suggesting that a ratio too high in omega 6 fatty acids interferes with insulin metabolism in humans with the right mix of genes/lifestyle/stressors/ etc. However it's a probably a complex multifactorial interplay and not a simple rule that applies to every person. This lit. review on pubMed is worth a read if interested:
www.ncbi.nlm.nih.gov/pmc/articles/PMC8691379/This is the last paragraph of the above: "Regardless of what future findings may indicate on the relationship between heart disease, glucose regulation, and dietary LA intake, there is significant molecular and clinical evidence that the species-specific metabolic effects of LA and other dietary fats are dependent on the individual who consumes them. As such, the use of reductionist dietary recommendations that generalize the role of SFAs, (saturated fats) MUFAs, (monounsaturated fats)and PUFAs (polyunsaturated fats) in the body could be exacerbating, rather than alleviating, the current epidemic of chronic metabolic diseases."