It really doesn't matter whether the details are accurate or not, whether the story is borrowed or not or even whether it actually happened or not.
The point is that billions of people today claim at least nominal allegiance to this character and a good proportion of them worship and love him. THAT'S the reality that is so unsettling.
How is this healthy for humanity?
Perhaps I should start the Harold Shipman Fan Club? I'm sure he did a lot of good in Greater Manchester, well, you know, if you just ignore the mass killings.