Beleive you might have been led astray by journalese. Mike is a "Test Pilot" in the same meaning as a test drive of a new car not an Experimental Test Pilot who does the initial certification flying. They quote one of the aircraft he flew was the CL605 - well I worked on that program and, with the greatest of respect, Mike was NOT on the test team. Having said that, getting someone to let you fly the latest equipment & get paid for it is a great gig if you can land it.