Although all astronauts have stellar (ha) resumes, most are not test pilots. Mission specialists come from all areas of science: the current cohort include a marine biologist, geologist, oceanographer and a ton of aero/astro engineers
Then you remember that you're also competing with Jonny Kim:
> The California native trained and operated as a Navy SEAL, completing more than 100 combat operations and earning a Silver Star and Bronze Star with Combat “V”. Afterward, he went on to complete a degree in Mathematics at the University of San Diego and a Doctorate of Medicine at Harvard Medical School.
The sky's the limit!
It's not really a cost saving measure, it's just that machines are much more capable of performing the precision maneuvers it takes to fly spacecraft under normal conditions.
SpaceX can launch its own rockets into space, so they could conceivably launch their own crews. Certainly the 'space tourist' business from Blue Origin and Virgin Galactic have employees as 'operators' for the equipment, they just have less capable equipment.
The fact that SpaceX exists and is competing in the crew option means that "Dragon Pilot for SpaceX" can be a thing. Before now, that was just science fiction.