I actually went to see Alien 3 in theatres, and from the first scene where Kyle Reese & Newt were spontaniously dead, I was already lost on the movie, so yeah, that does have something to do with it. But more over, the franchise got turned into too much of a "yeah, you killed all the aliens in the last one, but not really, also, you're in a significantly worse situation than you thought, sucka!" A little bit is ok, but it became too huge of a crutch. Kinda like Terminator 3.