This pathology goes way back. Sharpton was at one time tried for fraud and tax evasion, because all the money from his supposed "church" went for his Cadillacs and fancy suits (and this was when he was a lot heavier!). They called in witnesses, the little old black ladies from his church who were the church's main donors, and they all said they knew their money was going directly to "the Reverend" and that he deserved it.
The black church reflects a weird part of black culture, which is that anybody who is a "leader" of any sort, particularly religious (which is why Obama tries to cast himself in that role), is exempt from criticism or even examination and is entitled to do things forbidden to his followers. I think it's probably a tribal leftover, but it's something that needs to be overcome.
Instead, unfortunately, it looks like all of America is picking it up.