Not surprising its safe, no one is doing anything exciting anymore nowadays
Its not surprising at all that tests flights are so safe and reliable when no one is designing anything new or different.
Test flights are pretty much a formality now that everyone is just building slight variations on their existing craft and are just your standard aluminum tube with a pair of wings on either side and powered by 2 / 4 petroleum-burning turbofans strapped to the bottom of the wings. The most revolutionary thing to hit the skies in the past several decades is replacing the aluminum on the sides with carbon fiber or blending the winglets into the wing surface whoop-de-fucking-do.
Why don't aircraft manufacturers have the courage to actually make something revolutionary anymore? Why no new designs (Flying wings, proper blended-bodies, etc)? Why not try different fuels on a larger scale? How about something new for once? I'd settle for a new design that would cut down the hour and a half cluster-fuck that is getting 100 passengers off the plane and 100 new ones on (Could probably be solved by the airlines, but the manufacturers could do something to help make it more efficient).