I always understood that olive oil is on the list of oils that we are advised not to use at very high temperatures.
I use rapeseed oil because the brand I buy is grown and processed locally. Since I never deep fry and rarely use more than teaspoon of oil in any cooking, I see no reason to need to bother with lists like this.
I have always used butter, never margarine of any kind. Again, we do not use a lot.
Personally, I take all these recommnedations with a pinch of salt. We have always had a healthy diet, as the result of a medical problem I had as a child, which I have always controlled with a diet that is high in fibre, keeping well hydrated and being active.
DH and I are both 78. I am not overweight, physically fit, on no medication and with no underlying medical problems. DH is obese and has been for decades, he has diabetes, but in remission for the last 10 years, high blood pressure and had aa heart attck and triple bypass surgery just over a year ago?
Make of that what you will.