As part of the --accepted-risk feature (OTA-1532), because listing unaccepted risk names gives us a way to say "we have more problems we think you should consider" for folks who just want a short summary before deciding whether they want more details. I'm keeping the chatty version as the default, because historically we have had users who don't want to look at the details, and instead hope that waiting will be enough for the issues to resolve.

For "there was a regression, and Red Hat will ship a fix", waiting will eventually work. But for "your cluster is alerting, and you should look into that", waiting is unlikely to help. And even for the regression situation, it is the user's responsibility to weigh the risk of updating into the known regression against the risk of remaining on an old, possibly buggy release. Red Hat will support either choice.

Having --quiet be an explicit choice makes it clear that Red Hat thinks the user should be engaging with and evaluating any detected issues, while allowing users to say "I don't have time now, sorry. Give me the short summary".