She is a lot more than you realize and casting her as a syncretist is just one more calumny to throw at a saint.
I can tell you I live in a heavily Baptist area with few Catholics other than a few thousand. I don't give them a thought other than to pray for them.
I can't think as to the last time ANY religion other than my own was addressed by anyone in the church.
Are you sure you aren't projecting your own thoughts and beliefs on others? It sure sounds like it.
Are you opposed to proselytizing non-Catholics? Or at maybe at least giving them a flyer or tract and telling them they're welcome to investigate?
I am quite literally worried about a ban on all proselytization that will come about as a result of an multi-religious alliance against Fundamentalist Protestant missionaries.