I might have disagreed lots with the man on certain things, but I acquired a certain amount of respect for his doggedness and commitment. He might have even won a few souls that way that might not have been reached by any other means.
God works in mysterious ways. Things that might sound like the most abysmal methods of evangelism possible could still play a role in genuine salvations, yet in such a way that the glory goes to the Lord and not to men.