It's worth noting that this site appears to be the same type of "extreme diet camp" that the author pokes fun at. He appears to be a vegan (https://twitter.com/TheNutrivore) and advocate for pro-vegan views. Overall he seems to have the same epistemology MO as, eg., Ray Peat -- a cranky obsessive lay-person who primarily blogs at length for topics that interest him. I picked another article off his site at random and his own biases become quite apparent (https://www.the-nutrivore.com/post/a-systematic-appraisal-of...).
The above preamble has no bearing on the PUFA question! I personally love cranky obsessive bloggers and genuinely look forward to reading more from this site. Open and honest debate, ftw.