27 “Woe to you, teachers of the law and Pharisees, you hypocrites! You are like whitewashed tombs, which look beautiful on the outside but on the inside are full of the bones of the dead and everything unclean.
Matthew 23:27 | NIV
For an outsider, these people look incredibly inviting. That is why the org wants people at the meetings so they can see how beautiful it is.
I think in people's minds they can excuse the false teachings because "there is no other brotherhood in the world like ours (theirs)".