You want hollow go watch Tomb Raider or many of the movies coming out. People have made dozens of videos, written essays and articles about the meanings behind Prometheus and Covenant. If it were hollow that means it has no substance, it is just popcorn entertainment for the masses. Ridley Scott does not make those kind of movies. There are some deep ideas behind them, and somehow this does not make them pretentious.
Alien Covenant is one of my favourite films at this moment. I have the bluray and have watched it at least a dozen times.
Yes, they did not need to include the alien, but that part is entertaining so it doesn't bother me. The alien kicked a lot of arse in this film, it had some great moments, some of the best in the series. One alien is actually a threat again, it hasn't been that way since Alien 3.