[blargey]

"Seed oil" is a broad category, but the most popular (cheap) seed oils would also fall under "ultraprocessed foods".

Canola oil in particular is ever-present in the US, and unlike other refined plant oils, requires the ultraprocessing to be considered fit for human consumption (you'll never see extra-virgin canola oil on a grocery shelf). Debates about its safety aside, I don't feel the need to give it the benefit of the doubt when I could just eat something that doesn't contain it, and that something would likely be healthier for many other reasons.