You are trying to justify the existence of an industry that doesn't need to exist. The great unwashed don't need their 'thrill' rides and the people living underneath the routes certainly don't need the noise and worry about accidents.
The Grand Canyon certainly doesn't need the noise and air pollution - something like 400 flights a day in what is supposed to be a beautiful and tranquil place - just to service a bunch of lazy people who can't be arsed to go and walk down into the canyon to admire its majesty. The next step is the awful Escalade that planners keep pushing for.
When making money can only be achieved by taking and putting other people at increased risk with no tangible upside other than a thrill, maybe that money making just shouldn't happen.