First. just because someone lists 5 things does not mean that they are the CORRECT 5 things.
I do agree that we are charged with going out and spreading the Good News.
As far as what are the obstacles, the negative publicity in recent years i think would top the list. Yes the media has spotlighted it too much but still, they couldn;t do that if there was not truth there for them to magnify. Negative publicity does not help any organization.
Also there are some policies that are just not popular. Clerical celibacy, no divorce, no birth control and so on. These policies will not attract the masses.
Last, I’d say society and culture have become more secular. You just never watch a tv show or a movie where a character is going to Church or praying or reading the Bible.
Those are what i’d see as big obstacles. No comment on whether or not they are good or bad things as I think that is just BESIDE THE POINT> They are there like it or not.