Yes, quite clearly they are fake.
Maybe that's why these ones are 'grabbing the imagination' of the believers with such enthusiasm.
But, I've seen many UFO videos with talking in them and it's no surprise to me that when humans make hoaxes, there are always humans around to add a bit of talking.
Can you offer some explanation to why they are fake?
Can you show me some other ufo hoax video with acting and dialogue in it?