Who was guiding that teen in his understanding of AL?  I wrote on another aspect of AL, that one of my grad students told me about his younger sibling who is a senior at a private Catholic high school.  The religion department of that school has a team of 5 persons teaching religion to the seniors.  This semester, they were studying the traditional states of life in the Catholic Church----single, religious state, Holy Orders and Matrimony.  When the young people were studying Matrimony, the Team had them look at AL  All of the Team has advanced theology degrees and the youngsters were guided by the married couple and the priest in their reading of AL.  The sibling of my grad student, commented that he thought that AL is "cool".  It all depends upon who is directing the study.

As far as the 'dubia' is concerned---none of these cardinals are even heading a parish, never-mind a diocese.  Their 'dubia' is meant to trap Francis, not to clarify anything.