Who cares if x-amount of dollars were dedicated for that project? All the money was well-spent so some people, who have a phobia with heights, can clog up the freaking tourist line!
I would be extremely upset if there is a warning sign saying Do Not Proceed Pass This Point If You Have A Fear of Heights or something similar. My hope would be to enjoy the view and the architecture of the platform--not be distracted by others crying 'OMG! It's so high!' and practicing their physical therapy sessions on a mountainside!
Sorry for mini-rant.