Do you also recommend he stay away from airplanes? Especially their cockpits? 
Fears are funny. I am afraid of heights, but when I drove over the Confederation Bridge between PEI and New Brunswick I was disappointed that they had block the sight of the ocean below.
And I have driven dozens of times over the bridge to Annapolis at the upper end of Chesapeake Bay without noticing anything much. So I was astonished to discover that there are people who make a living by driving other people’s cars over it because they can’t bring themselves to do it themself.