> What are users expected to do exactly?

From the bottom of the post I know what they are hoping users will do:

> Suppose your deployed Helm chart is failing to pull images from docker.io/bitnami. In that case, you can resolve this by subscribing to Bitnami Secure Images, ensuring that the Helm charts receive continued support and security updates.

They don't want to give instructions that are too helpful. They want your company CC to be the easiest way to fix the problem they created.