I think about it like this - seed oils are in nearly all processed foods. Read the labels of anything in your house that's in a bag, or will not expire in the next week. 95% chance there is sunflower/canola/safflower/sesame seed oil in it.
By avoiding seed oils, you tend to eat more whole foods. It's not an awful cue to pay attention to.
By avoiding seed oils, you tend to eat more whole foods. It's not an awful cue to pay attention to.