I have occasionally been criticised for the lack of respect with which I sometimes refer to the current occupant of the Roman See. I don't think that is really quite just. It is infelicitous constantly to refer to someone in the same way. The graces of literary convention demand Variety. But I have decided to avoid controversy by following the usage of people who resort to "PF" or "the HF". I do so regretfully. You see, surely those initials could have multiple and disrespectful references, for which I would not wish to be held responsible. "Poor Fellow". Or "the Horrible Fantasy". You name it. I mean, readers might like to take time off from finishing the Times Crossword and devise some referenda for those initials.
Be fair to me. I have habitually refered to the Sovereign Pontiff as anything between "Bergoglio" and, er, "the Sovereign Pontiff". My own preferences would be for those elegant first millennium terms domnus apostolicus and Vicarius Petri, but some newer readers might be mystified.
It can be amusing to use honorifics which are perversely and delightfully apposite. For example, if it were ever to occur (please God, make this happen!) that we had a Cardinal Archbishop of Westminster of profoundly diminutive proportions, how satisfying it would be always to refer to him as "His Eminence"!
By the way: in yesteryear, the Church was commonly referred to as "Our Holy Mother the Church". The University of Oxford still does that when conferring Masters' Degrees, but otherwise not many people seem to do so nowadays. I don't thnk I've ever yet been criticised for failure consistently to do this.