Fat (mostly animal fats) do not clog your arteries; they actually protect your heart, as long as they are not rancid.
As for the fries, double bad! Starch and vegetable oil, and most likely quite stale in most cases.
Do you have studies you can cite to support your post?
FYI: Both my cardiologist and my dietician advocate cutting all fats for heart health. As for starches, even with diabetes, I can still have some carbs — just don’t overdo.
Please understand — I don’t want to get into an argument, but I have to be wary of health claims. There is an amazing amount of junk science out there and adhering to it could be fatal for me. So if you can give me links to some studies, I will ask the professionals about them.