Well, that's the theory, I've heard it and repeated it myself a few times in the early days of VR, but Battlezone cured me of that misconception very quickly. I've been playing a lot of PSVR the last few months, never have problems with games like Skyrim or Farpoint as long as I use blink turning. The problem with cockpit games is that blink turning usually breaks the game, so even though you have a stable reference of the vehicle around you, you still need to be careful.
The AC7 demo was definitely giving me some negative feels. Some motions are better than others, and to be completely fair flying a jet fighter like you do in the game will make most people hurl in real life also.
It'll be different for everyone as with anything VR. Wipeout is ok for me since I use the level pilot head setting, which doesn't work for airplanes. I should note I'm not nauseous after playing the AC7, but it was just under 4 minutes and I wad starting to feel a bit funky. It'll take some getting used to, Driveclub hit me hard the first time I played, but after that I've been fine.