The tradition they are beneficiaries of is in my opinion, even more rich, but it is hard for you to see. You only see Joseph as a lying conman. But he saw far beyond what you think he saw.
Ski, you must understand that it is difficult for Catholics or any non-mormons to shut down our intellects and slow down our thought processes to the point that mormonism makes sense. The mormon “religion” is certainly rich in the tradition of deception,outright lies,sexual shenannigans, mind control, false “prophecy”, abuse of women etc, etc. Need I go on? And yes, we do see Joseph Smith as a lying con-man. Full stop.
Sure, you think that you are doing right. David Koresh thought that he was doing right. Jim Jones thought that he was doing right. Warren Jeffs (Your co-religionist) thought that he was doing right. Even Adolf Hitler thought that he was doing right. You are doing wrong and we Catholics will never understand nor accept it. Error has no rights.