Yes, nothing wrong with warning people, but something is wrong with publishing rash judgments on a public forum (not CI, Facebook!). I don’t use Facebook, never have, never will. I conclude that the persons being warned of on this thread reside in Florida. Fortunately, I’m nowhere near Florida, haven’t been there since 1973!
I will say this. If a priest, chapel, religious order, society, fraternity seems “off,” it probably is! Take the time and space to objectively evaluate before you jump in.