If I had to be serious, I would say.. the ones who are, or should be, considered astronauts, are the ones who are responsible for "doing things" especially if something doesn't go to plan. Everyone else is just a passenger.
Much like a driver of a regular car or even the one behind the wheel of a semi-autonomous one, they are the driver responsible for their passengers.
A pilot, may well have the plane do everything.. but if those things are not doing what they should be, the pilot should be able to take over and take matters into their own hand, again, responsible for the passengers.
That kind of thing, in a lazy way.. so eh eh calm down mates...
the thing with space as it currently exists, people tend to not have multiple options to be tested as such ... a couple tosses up is all you might get in a life time and if nothing bad happens, how can you differentiate them as an astronaut vs their passengers? they did the same things. (assuming someone who could handle an emergency was included).