I'd please ask people to don't write operators unless absolutely necessary.

I used a certain tool which had its own config format, and it's "cloudnative" operator implemented CRDs of which multiple can exist and they would update the config file in some mounted volume. Such thing is a hell to debug. Why can't we just store the config file in configmap/ secret and listen to changes?

(If we had a better templating solution than helm, I think quite a few operators wouldn't need to exist.)