Description of problem:
When deploying OSP16 without anything Ceph related, we need to exclude the ceph repositories from the container-prepare-parameters and undefine the TripleO::Services as described here: https://access.redhat.com/solutions/4895201

We would like to confirm if there's any downside with doing this, and our customer was also wondering why it's an Opt-Out process instead of an Opt-In process.

There's some overhead work to either add these repos to satellite, or to disable the ceph services  like this.