Fair crack LL the guy needs to earn a crust and his crust is dependant on the number of hits his blog generates and part of that is out-scooping the mainstream media, which in this case he has done very well.
Besides the section you quote..."
doing something like 850 kilometres an hour, through airspace which includes A380s and 777s as well as a host of airliners of lesser size, any one of which can be destroyed by the inability of a developed country to provide a professional and well managed air traffic control system"... is a very tame example given today's 24/7 media coverage and the fact it was a developing story.
BS does go onto clarify the TCAS thing further on in his blog...
TCAS is not intended to be a substitute for professional air traffic separation. TCAS is itself inhibited in some situations, and sometimes, it isn’t switched on when it should be.
For Airservices to claim that equipment installed on airliners such as the Virgin Australia 737-800 is part of a safety net to save itself from grossly incompetent management is to be blunt, shocking and nonsensical.
It is also contrary to international practice and our obligations to the safety of foreign airliners as well as our own.