The naivete of the media in explaining huge JP Morgan loss.

They assume it was all aboveboard. It was a legitimate "loss". They accept Jamie Dimon's explanation.

Maybe it was and maybe it wasn't?

The idea that maybe something was illegal or criminal about the $2 billion dollar loss never enters the mind of the media. They accept the story from Jamie Dimon without any facts to back him up.
After all, why would he lie?

Two billion dollar losses do not just happen. Supposedly, they hedged their bets but their "hedges" didn't work. That alone should raise some questions.

Maybe we don't need more regulation? Maybe we need more law enforcement? So long as the subject can be too complex to understand or to explain, criminals can steal all the money they want. It is naive to accept these explanations from the media and the big bankers.