Yeah but it’s 16 years for being a fool.
What I think you might be missing is that if he hadn’t fled his ship, but had instead stayed aboard and directed a proper abandoning of the ship, some of the people who died might well have lived.
There is no good reason for people not being able to abandon that ship in good order. Nobody should have died. You should be able to completely abandon a cruise ship in 30 minutes. It took over six hours with the Costa Concordia. And that was primarily because the right orders were not being given.
16 years for 32 deaths being a fool. Not that harsh.