They are recommending oils like canola (which I call rape oil) that go rancid inside the bloodstream, creating more inflammation and clots within your blood vessels. And they wonder why there are so many with heart trouble. As for margarine and shortening, go ahead and eat it--if you enjoy eating plastic. That is what these abominations are, plastic.
And avoid animal fats? Sounds like the jokehovian witlesses are trying to impose a vegan diet on the flock. A vegan diet is deficient in so many key nutrients, including fatty acids and vitamin B12. We are not meant to be herbivores, idiots! You are better off eating high quality animal fats and coconut oil in place of these highly processed seed oils, including rape oils and the trans fats found in margarine and shortening (plastic). Obviously, too much of any type of fat will lead to too many calories and will result in your getting fat.
But, what else can you expect? These are the same idiots that are trying to make the coronavirus shot mandatory.