I'm a big statin sceptic so just putting that up front.

I think things haven't changed because most people underestimate how slow institutional scale change is. There is a reason why HR departments and consultants have Change Management experts. The inertia is huge. Young people don't appreciate this because they thrive on new ideas. Old folks don't and will subconsciously push back, like a form of institutional homeostasis.

Also, while I believe your heart attack stats are correct, I'm more interested in all cause mortality. I believe there statins are a net negative.