The criticisms I've seen come with an awareness that PUFAs exist in animal fats too, and are virtually unavoidable and healthy in those smaller amounts and nutritional contexts. They argue that the dose makes the poison, and PUFA consumption has increased many-fold in the modern era causing a great fraction of metabolic syndrome and associated chronic diseases.

I've found Peter Dobromylskyj particularly interesting on this topic:

https://hyperlipid.blogspot.com/