Tons of people use head tracking like this via TrackIR and similar setups, it's quite common for space or air sim games.
And even with milsim FPS, as those blog posts from more than 10 years ago shows: https://dslyecxi.com/category/trackir/
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And even with milsim FPS, as those blog posts from more than 10 years ago shows: https://dslyecxi.com/category/trackir/