Is there any source online (or offline) where the 'gory details' of infringements are recorded (Airprox style) and hopefully some analysis of impact and root cause?
There is a general tone in the discussion that infringements are VFR hobbyists. Of the ones I am aware of they range from a Citation on his departure climb not levelling off before entering controlled airspace, a TBM700 airtaxi operator cutting up the London Zone, a French PPLsailing through the TMA at about FL70, a poster here cutting an edge while IFR, another poster entering CAS before being cleared in on a handover plus the lost and the careless.
This random sample seems to indicate the problem is more complicated than Muppet VFR PPLs with duff Mark I eyeballs.