Why is ED an in cockpit space (ship) sim ?
Edit: that should be 'how' is it...
It's possible to call it more than that, but having 10 word long genre definition would drag on — but it's of the main things it does in a believable/realistic/authentic/whatever manner.
• Using the left and right panels like you would use instruments in an aircraft
• No third person view
• It has a canopy that crack, oxygen levels.
etc.
It's very basic yes, but my point is that black or white, blanket statement genre names just aren't useful.
Otherwise if I had to judge, for example a flight sim — based purely on raw amount of systems they simulate + level of complexity, then I would have to dismiss every single flight sim that is not DCS A-10c level of "everything in cockpit is clickable and does the what the real life version does".
Some flight sims focus only the flight model and handling of an aircraft, without the full cockpit interaction — that doesn't mean it isn't a flight sim, and it sure as hell doesn't throw it all the way down to arcade level.