Trying to get away from the name calling and blame game for a moment: has it occurred to anyone else that if offset tracking was MANDATORY for all aircraft (or even better, as some have suggested earlier, inbuilt into our FMSs), this thread would be be about a half page long and titled something like "Close call in Brazil?"
And 154 people would still be alive.
As someone else has already said, I can't understand the ongoing resistance to this idea.