I stand corrected. Then the question becomes are certain seed oils healthier than others? Soybean oil seems to be the default in most dressings, condiments now.
Maybe, but all of the ones commonly called "seed" oils do as far as I know use a similar refining process with toxic hexane and probably other toxic stuff if I were to guess.
There may also be a difference in the polyunsaturated fats being worse as humans haven't been eating them in quantity for as long historically and maybe aren't well adapted, but I don't know as much about that.