The claim that sharks are less dangerous than bees, lightning, or whatever, is a fine example of misleading with statistics. Bees and lightning can strike anyone who walks outside (that is everyone but the most extreme basement dwellers), but sharks are only going to attack people who swim, and while they are swimming.
For a start, I never go into the sea; neither does my wife, son, neighbours, 99.9% of the citizens of the Central African Republic, and I guess most people anywhere. Even of those who do enter the sea, the vast majority must spend a very small percentage of their time in it.
I would submit therefore that the risk of shark attack while in the sea is very significantly higher than that of a bee attack or lighting strike when walking around on land.