IOW, the Roman church doesn't mean what it says.
It means what the RCC says it means.
It's all the same excuses made for your current pope.
It was mistranslated, misunderstood, misinterpreted, misquoted, mis(fillintheblank).
If the Catholic church can't be trusted to communicate clearly enough to actually say what it means, then why should it be trusted in any other matter?
To your last question......they cannot be. It’s a classic sign of a cult when they play the “only we have the inside knowledge”card. It was one of the early problems the ekklesia had to contend with in refuting the Gnostics.