If so then what is believed about a fictional character - based upon the writings about that fictional character - are WHAT and WHO that fictional character is - in this case a pedophile.
May as well try to claim that King Arthur, if he did exist, wasn't really the son of Uther Pendragon, and didn't really marry Guenevere!
That is ridiculous!
St. Gildas also existed ~ his church is just across the way from what amounts to our family ancestral home ~ which he also built about 1500 years ago.
Do you dare doubt King Ad?
This Mohammad guy has no contemporaneous accounts ~ the whole story was put together many years after his death in Damascus.