Beringer.
Your view lacks compassion, both for the ATCO and his family.
From a technical view point: Complete safety means nobody flies. Error will always exist in human endevour and it is not possible to run an ATC system without some danger. That is why such systems must be designed and run in a manner which deliberately offsets the "hoops" to the greatest degree possible. On the night in question the system was exposed, mainly, by management decisions that lined up the hoops. Those decisions were not the responsibility of the ATCO and whilst he was involved in the system failure, it is not his fault.
I think your remarks might not assist here. Peace man.
Point 4