his is a modern proprietary flight simulator called X-Plane:
https://www.youtube.com/watch?v=sxhfqZQYnyQ
FlightGear isn't as far behind here as, say, Xonotic is behind other
first-person shooters, but that's because the level where it's close to
maximum potential was reached a decade ago. See this video, for example:
https://www.youtube.com/watch?v=qGh4zrBNyyk
None of the FlightGear screenshots in the threads you linked to look
substantially better than this, if better at all. The game shown in this
video is from 2006.
