That article is specifically about soybean oil, but sunflower oil also has a high linoleic acid content.
I think it really depends on your total linoleic acid intake. If you’re using a variety of cooking oils, and/or different cooking methods (e.g. steaming) then it probably doesn’t matter much.
Where I think it matters is when someone is taking in a diet of mostly prepared, highly processed foods that have things like soybean oil added.