lol I didn't make myself clear. He got hit in the head and because he was 72 he died.
History points to quite a number of healthy young cricketers who have been killed by a cricket ball. Zimbabwe's Mark Vermeulen would also advocate that helmets are no substitute for simply avoiding the ball, having suffered two skull fractures in his career.
Being able to avoid the ball is usually what keeps an umpire safe. They normally stand a fair distance from the action, giving them sufficient time to move their head six inches if the ball is airborne. True, an older person might have both slowed reactions and less flexible limbs, making it more likely that they get hit by the ball. Nevertheless, it is routinely proven that a surprising bounce can undo even the best batsmen in the world, even when they're expecting the ball!
Run out chances are probably the biggest risk for an umpire, because if the ball hits the stumps as intended, it could ricochet off in any direction. In the event that the ball moves in the absolute worst direction, it most certainly wouldn't discriminate between young and old.
When you look at the medieval suit of armour that some batsmen wear, it's a fair question to ask whether umpires should be protected. However, batsmen are likely to get hit by the ball almost every time they bat, while an umpire isn't likely to be hit in spite of spending the whole time on the field.
It's been 10 years since the last cricket related death and that wasn't even an umpire. The risk to umpires is incredibly low. If they need helmets, then they probably need lightning rods as well.