The suggestion from some posters seems to be that prosecution of individual pilots in these circumstances will result in a reduction of aviation safety. I assert the opposite is true. If you are of the opinion that negligence should go unpunished, then just wait until the reckless driver slams into one of your children.
The principle of apportioning blame and applying punishment after actions by an individual or company resulting in loss of life or injury is long established in law. It is enshrined in civil law for a long time, many centuries in fact.
If, after several warnings and urgings from the FO, the Captain of this particular flight continued an ill advised course of action then he must be accountable for the subsequent damaging results.
Trial and punishment under these circumstances will show others that their actions might be held to account in similar circumstances. If this leads to one pilot changing his mind and seeking the safer option then the trial of this pilot has been worthwhile.
As for hordes of pilots pulling Circuit Breakers, it is just not going to happen. The lack of recorded data will become apparent very quickly to our engineering colleagues and it would not be long before the very inept and stupid pilot was invited for tea and biscuits.
Attitudes to this type of incident/accident vary around the world, as we know, but if a uniformly harsh and critical approach to criminal negligence was adopted universally, flying would ultimately be a safer industry.
Accountability must apply to everyone, and particularly to those who have the responsibility of the lives of fellow human beings, be they pilots, doctors or the PM, but that is another argument.