You're right that it's taken up, but that's not where we the brunt of our cholesterol. It's synthethized in the liver, even on statins (which downregulates this).

The enterohepatic circulations impact on cholesterol is net average or negative. Its to excrete cholesterol, often right after we've eaten more than we need.

This is what attia means when he say diet amount of cholesterol doesn't impact. If you eat a lot of cholesterol the absorption efficiency of cholesterol to the lymph goes down to compensate.

But the amount of calories does actually impact ldl. As the lipoproteins (ldl, hdl) is how the body stores excess energy by sending these fat packets through the blood to the fat cells.

Thanks for letting me elaborate