I've just been to two endocrinologists who gave me completely different diagnosis (they said different organs are the issue) Is this a sign endocrinology has no

I've just been to two endocrinologists who gave me completely different diagnosis (they said different organs are the issue) Is this a sign endocrinology has no scientific rigor? There is another explanation for the variation in therapy: different people respond well to different kinds of therapy. And it's really hard to tease this out by doing a randomized controlled trial, so this manifests in papers showing that most kinds of therapy work equally well (but potentially on different subsets of people)