How does it do that? None of the camera angles are from a 3rd person playing perspective - it shows walking and ships flying from a cinematic camera view, and from the release... "Experience intense first-person combat"
When the character aims his rifle, it flips to an over the shoulder view. Its a strange choice because they could have shown the traditional sniper scope POV but instead did that.
I expect you are fully right in that this was just FDs usual FMV shenanigans, but I found it odd that no shot was from inside the helmet.