15 year old knowledge is fine in most cases. Human diseases and their treatments haven't really changed in that time, and those that have are pretty well known. You will get the "standard of care" as a starting point.

You are citing a legacy institutional system where updating a "standard of care" was a major institutional chance.

You likely have to change your idea about this. Heck, this view was wrong 6 months ago. Sticking with is becomes a hazard to patients.