He's right. 4 was an abortion
3 was worse. Not only did it invalidate everything that happened in Aliens in then had a terrible story involving a group of terrible British actors playing a group of tediously boring monks, then proceeds to have Charles Dance shag Ripley, who dies at the end while giving 'birth' to an Alien queen.
I thought I liked 3 and the workprint myself, but after just watching it up until 38 mins, I took it out and put it into the "I don't want" DVD box. It's weird, I remember thinking I liked it back in the 90's, but it's so unwatchable and boring now. It's one thing to be slow and build tension, this one is just slow. Part 4, is watchable, but really stupid and pointlessly gorey. I remember liking that one too once upon a time.