There are lots of mouse studies that point to bad metabolic effects from soybean oil consumption. Many of these mechanisms are the same in humans. If one wants to start pulling the metaphorical thread on seed oils, this is not hard to do, as long as one realizes that the companies who sell these things will always tell the consumer they are healthy.
Seed oils did not exist in the food supply before the late 1800s, so the idea that they are this amazing health food, while also being incredibly cheap/profitable to produce and really useful in creating junk food really stretches credulity.