A doctor is medically and legally responsible for the guidance they give patients. Are there cases where they give bad advice and avoid taking responsibility? Of course, as is the case with lawyers, engineers, etc., but there are standards they must meet, laws they must follow, and most importantly, consequences for not doing so.

This has zero responsibility, not some theoretical, "it may try to shirk responsibility" or "many people report it not taking responsibility", it by default takes no responsibility.