It benefits/interests the individual Pprune members whom he lied to, attempted to mislead, defraud etc. and when uncovered made considerable problems and accusations privately and publically against those parties to cover his tracks...
It benefits/interests the Pprune membership as a whole who can now understand what was going on for that period of 18 months when NDR was attempting to cause maximum disruption to this forum and some its members
If u were one of those individuals affected then you understand the 'benefit'
...and is not making a wider audience aware of the aspects/signs of pedophile behaviour of benefit/interest...I certainly wasn't aware of many of the signs that apparently are common to this kind of character defect!?