What evidence is there that someone purposefully picked up a Wanted passenger mission and got destroyed the moment the are about to launch? There is so much shrill hysteria about not being able to grasp a simple game mechanic that accurate descriptions of actions gets lost. It is clear people are carrying Wanted passengers without realising, so if they manage to enter a station without being scanned first time round, pick up additional passengers then relaunch and get destroyed, that would explain that.
I've not done any passenger missions but have noticed several times since 2.2 that you can get scanned on station exit without the warning message. This is likely causing players to perceive they're being destroyed without warning.
It's obviously a bug and is separate to this discussion but I just thought it worth pointing out.
The other point people are making is that no one actually gets killed (everyone is safely jettisoned in escape pods). This is actually a valid point.
So all it really comes down to is if the penalty for carrying a wanted criminal should be destruction or whether it should just be a fine and instant failure of all passenger missions (and their resulting fines).
I think it should be the latter if illicit cargo doesn't result in ship destruction. But if it does then so should illicit passengers. It's that simple, really. It needs to be consistent and I don't believe being scanned with illicit cargo results in ship destruction.
Carrying a criminal is no different to carrying illegal goods. More importantly, carrying a criminal shouldn't gain the same punishment for that criminal's crimes. So the penalty needs to work the same way as with illicit cargo. And it can. For me realism is irrelevant. The only thing that matters is consistent risk and reward and penalties.