Vegetables are really usually seed oils like sunflower oil and so aren't vegetables at all really. Although you can get oils from the vegetable part of the plan

Vegetables are really usually seed oils like sunflower oil and so aren't vegetables at all really. Although you can get oils from the vegetable part of the plant. They are called vegetable oils though and not seed oils as a marketing ploy to help sell them. To make them it involves an extreme process which leaves them volatile and so when cooked transform into so many strange and potentially damaging components. Hence you would rather use more stable animal oils like fat or oil from process that aren't so extreme like olive oil, avocado oil, coconut oil etc. Calling them vegetable oils is a misnomer to help sell them. I bet just like in the original article, and just like transfats, it will come to light that these mass selling "vegetable" oils are also damaging. It took 90 years for them to admit transfats were bad and now replaced animal fats with vegetables oils.