Isn’t it obvious that a heart attack could be caused by a myriad of issues? Sure a bacteria could be a cause. So could be genetics, or an excess of cheeseburgers. A heart ceasing to pump blood effectively is not a singular cause

Exactly, it's complex.

"we found some bacteria in people with heart disease, let's try killing the bacteria" is really bad logic.

Like another commenter posted it's similar to saying a lot of house fires had fire trucks in front of them, let's do some trials where we destroy some of the fire trucks to see if that helps.

> Isn’t it obvious that a heart attack could be caused by a myriad of issues?

I think you not only missed the point but also are doubling down on your mistake by conflating correlation with causality. You don't conclude that burger craving is caused by owning a car by observing drive-through restaurants.