When I examine my dictionaries I find no such definition of “proselytize”. Again let us use words to mean what they mean. No Owellian doublespeak.
If you are more interested in scoring points than in understanding what the Pope was talking about, that’s your choice.
The usual dictionary, such as Webster’s, is wholly unsuitable for deciphering the discourse of someone who is using terms of art in some specialized field. Many’s the time I’ve seen a theological discussion utterly bollixed up by someone who insists that every word must mean exactly what it says in Webster’s.
That’s why there are MEDICAL dictionaries, and THEOLOGICAL dictionaries, as well as Webster’s.