Both can be true.
I never watched alien growing up, and only half-watched it with a girlfriend (sorry, good movies are great but... Boobs vs stereotypical teenager watching a movie....)
By the time I watched the movie fully, it just held no scare factor for me.
And so many dumb choices were made in Prometheus, it's hard to take the people seriously when everyone is acting like children who have never been in space or a dangerous situation before.
"Oklahoma AG Condones Elder Abuse, Police Brutality"
Fixed the headline