'ORAC' said: "It may be true that the auto-eject system would take the pilot clear, but if it happened over the deck it would still be incredibly dangerous. Would you like to be on deck when when an F-35B did a back flip 50ft up?"
I would like to be nowhere near such an event - including ashore - but I take the point that deck crews are much nearer the action during landings (and they enjoy the view BTW). If such a catastrophic event occurs to an F-35B there is nothing that can be done about it - best the pilot ejects as indicated.
Usually deck crew is at minimal numbers in any danger zone, with the 'lollygaggers/goofer' (spectators) in 'vultures row' in a safer environment above the deck.