Ruffles and Lays potato chips are just potatoes, vegetable oil, and salt. I think it's debatable whether butter or sunflower oil are healthier, but the environmental impact of butter is certainly worse.

I'd like to see the evidence for that. Given the evidence we have against saturated fat, I would expect better health outcomes for people fed potato chips fried in vegetable oil over butter. Every time we swap saturated fat with unsaturated fat, even in metabolic ward studies, we see better outcomes.

When I see someone saying that butter is somehow better, I like to see what evidence they've used to reach the inference despite all the evidence against that position.

Unfortunately the position usually just cashes out into "but I like butter".

That's just what Big Fat wants you to think.

Well, when someone singles out seed oils, they almost always are saying that butter is somehow better which is why I ask. And from there I ask them for the evidence so I can gauge their epistemic standards.

For example, your comments make no effort to distinguish saturated fat from unsaturated fat. Unsaturated fats are fine. Saturated fats have a mountain of evidence converging on their negative health impact.

Ruffles and Lays potato chips are just potatoes, vegetable oil, and salt.