argoCD
, has taken an unopinionated stance on the subject. Saying that there is no one-size-fits-all solution and that each use case is different.
Keeping Kubernetes Secrets Safe With Sealed-Secrets

Determining how to store secrets for kubernetes has always been a contentious issue. With many different ideas about best practices and how people should go about storing them. Adding to the confusion is the fact that one of the biggest and most important apps associated with the modern kubernetes workflow,