The dietary preferences of the owner of the site does not alter the validity of the information. The image is just a reference.
Here's the source of that table https://media.johnwiley.com.au/product_data/excerpt/06/04713...
Here's the source of that table https://media.johnwiley.com.au/product_data/excerpt/06/04713...
Also that article seems to be primarily concerned with the health benefits of linoleic acid and how to increase consumption of it.
Sourcing is important, and weird enough dietary ideas influence the trustworthiness of the chain. But more importantly the supplement-selling is a big potential conflict of interest.