I'm not really sure what footage you've looked at, but that's definitely not the case. True, the videos in the OP all use b-roll footage because the press are just describing their demo experiences and don't have footage to go with it. But all you have to do is go on youtube. Here, check out this
IGN demo. It's a live demo controlled by Sean, and it's a good 18 minute primer to NMS some gameplay concepts. There's plenty of others out there; maybe do a little 10 seconds of work to find videos before you call a game heavily scripted.
As an aside to everyone else, in this same video at around 7:23 you can see one of the drone Sentinels in the background doing what looks like scanning the surface of the planet. I didn't know the Sentinels did anything besides waiting to punish lawbreakers.