Comparing a hyperloop to an airplane is apples to oranges. Misk himself says that longer journies (like east to west coast USA) would be more economically feasible by plane. A hyperloop is much more like a maglev train in that it's suited to midrange journies that take hours by car but aren't worth the hassle of an airport. When compared to high speed rail, hyperloops have some very real advantages.
Also, calling EVs Musk's expensive toys when you can clearly see the entire industry introducing their own EVs is disingenuous. Certainly you can see that EVs have some very real advantages over fossil fuel cars.