If their conversation is all about how to get secular Jews to give them money and what is wrong with secular Jews then you know you are not dealing with an elevated spiritual community. Even if they insist on how spiritual they are, you already have a guarantee measuring stick. You can see if the claims are the same as the facts. You can see if they are just some cult around a leader, or if they are into Torah. You can see if they are building a cult based on the lie that they are all about Torah while in fact building their power base.
For this reason I have suggested that people learn only in Litvak yeshivas because only in such places have I seen the words match the facts.