One thing leads to the other. CT Russell was accused by his wife of having sex with their underage foster child, and many others admitted him being cruel towards people in his immediate vicinity. He was a con-man at best and a swindling child molester psychopath at worst.
Not that that proves anything, but most historians find this person to be very unimportant (as are JWs today) so he is largely forgotten, most of what we do know is either from public records or rewritten by the WTBTS or a few detractors, so I doubt we will ever get the true picture.
You have to be some kind of special to put yourself above even God himself to become the Supreme Leader of any kind of cult, and from reading contemporary accounts and the old publications, that is what he made himself out to be and many people called it a cult. It wouldn’t surprise me a lot of things were swept under the rug by believers at the time as they do today and there may be paper records of investigations of authorities that ran into stonewalling by believers but now are slowly rotting away because this person is wholly unimportant to the majority of the world.