Date: December 31, 2020 01:25AM
Joseph Smith may have taught things that are true. Other Church leaders may have also taught true things. Things don't cease being true just because a dishonest person teaches them.
Smith taught things that "might be true" as opposed to things he taught that are definitely not true. His claims about the BOM are definitely not true. But his teaching that men can become gods might be true. Smith put words in the BOM that were copied from the Bible. These words "might be true"; they are true if the Bible is true.
Even though Bernie Madoff was a con man, he may have taught people true and sound investment principles some of the time. It would have helped him to gain people's trust.