These are pastoral, prudential decisions, not dogmatic theology. Sure, the pope can circumscribe the debate to some degree, but it's an advisory council to the pope. It's not a legislative body. Better to air on the side of tolerance. Let the bishops speak their minds.
But they need to do a better job with the information that they're distributing to the media.
Condoning sin is “prudential”? “Pastoral”?
Why let a lot of heretics air their heresies?
What’s the purpose of a Pope, if he can’t rule his subordinates?