I noticed that almost all types of cooking oil (vegetable oil, olive oil, peanut oil, etc) contain some saturated fat. Since saturated fat is known to be a contributor to heart disease, then could you simply remove the saturated fats from the oil to make it healthier?
A lot about health and diet isn’t understood very well. There are a number of advocates for saturated fats over PUFAs, with some (but not universal) evidence to support it. It’s entirely possible that it’s a case of correlation vs causation, but nothing has been proven with certainty.