External, disembodied promotional pics to showcase graphics and assets has nothing to do with whether or not the game will have (or should have) a 3rd person view. They are just graphics pics.
They're graphics pics which are giving a false sense of what the game will look, feel and play like to unwary consumers. I find it hard to believe FD can seriously think "The ideal way to experience ED is cockpit-only! And it looks the best too!" and then also produce 3rd person shots and movies to promote it, which will be unobtainable in the game. Pretty disingenuous of them. If they truly believed cockpit-only shows the game at its best, why not use that view for all promo material?
All of which is to say that the method of interaction is a crucial component of any game, and plenty of them let you choose various ways to interact. Even ED has a bunch of options already, catering to keyboard and mouse, joysticks, TrackIR and Oculus Rift. Which of those is the designer's true vision for how to play his game? And why bother with the rest if one of those is considered "ideal"? I see no real difference between giving people some software choices as well as those hardware choices - if they get a better (for them) game out of it then I'd consider that a success, not a failure of design vision!
Jabokai, will you marry me?