I pointed to this BMJ reference because in the article there is the following: "To help drive down our ApoB, we have statins which do miracles for lipid management. Some people believe that everyone should be on a statin so long as they don’t have adverse side effects."
Most statins prescribed today are not for secondary prevention.
A lot of doctors prescribe a statin immediately on seeing just one measure of "high" LDL without looking at any other parameter or context.
Yeah, for each level of cardiovascular risk (in America, probably calculated with PREVENT) there is a target LDL which should guide whether you should start or not a statin.
https://www.bmj.com/campaign/statins-open-data
So no settled science here.
Unless you consider the BMJ a trash journal of course.