It's not even all that recent, I took some nutritional biochem classes in the late 70's and the professor said repeatedly that dietary cholesterol was not a big

It's not even all that recent, I took some nutritional biochem classes in the late 70's and the professor said repeatedly that dietary cholesterol was not a big factor in what was in your blood as the molecule was too big to pass through the intestinal wall. What is made by the body (generally from a fatty diet) matters.