Personally, I find the futile vitriolic condemnation vented by lay people using pointlessly emotive language to be quite tiresome and not a little repugnant.
The majority of child abusers are in fact victims of child abuse themselves and the pathology of their mental states is quite complex and difficult to resolve. There is also the additional factor where the condition may be influenced by physical changes to the brain altering human behavioural patterns.
It s actually quite an interesting subject given it occurs throughout all societies since the beginning of time.
This particular individual is a classic example of how self absorption can exclude any insight that might permit comprehension of an alternative view to his own. Certainly, there may be a degree of deception being employed by him in affecting ignorance of any criminal culpability but that would require forensic investigation to establish.
Screaming for some medieval barbarity to be inflicted upon him and incarceration in the equivalent of a dungeon redolent of the Count of Monte Cristo is of course an alternative to medical research within a secure unit but may not be as fruitful in achieving progress understanding the phenomenon