The second issue is that if you look at the data of that study, its slightly skewed the weight and diabetic markers to favour the pufa group, the weight and blood markers were slightly worse in the saturated fat group to begin with, and the amount of change was actually very small, they might have used relative change instead of absolute change in their percentages, it's a very common thing statin studies do.I i know that guy, he is very narrow minded because he only looks at research that backs his claims, just because they are rcts doesn't mean they are true.
There's one study showing that polyunsaturates decrease liver fat compared to saturated fat in obese diabetic people, there were two issues with that study, the first is that it only happened for a couple of months, the first few months people eat pufa, they actually get a benefit in their results because they are consuming a TON of vitamin E which is a major anti oxidant, but ray peat is more so talking about long term, like 5+ years.
Also I have a brother who still eats seed oils and he gets burnt so easily, i never get sunburnt ever anymore.