I'm starting to think that a lot of the Generations hate comes from TOS fans who dislike TNG. I think these people are searching for a way to bash TNG without it seeming unfair, and so they take something like the death of Kirk (which was REALLY poorly executed), blow it completely out of proportion, and use it to bash the entire film. It's completely unfair, and it tarnishes the reputation of an otherwise good film.
I grew up watching TNG, and a lot of the problems I had with Generations are because of that. The beloved characters of the show were twisted into unrecognizable jokes; such as seeing Picard, the man who hated kids and couldn't understand why Starfleet had given him a ship full of children, suddenly weeping because he didn't have a family. Data's quest to become human was a favorite character arc of the show, Generations turned it into an unending, torturous gag of Data being 'funny.'
The gaping plot holes were another. Soran has to blow up a sun to get into the Nexus, why couldn't he put on a spacesuit and have a ship shoot him into the Nexus? Or pilot a ship into the Nexus? Why did he have to use such a convoluted plan?
You can go anywhere and any time in the Nexus, yet Picard decides that the best time to go to in order to stop Soran would be a few minutes before Soran shoots the rocket. Even though this gives him less time to stop Soran.
Watching the Enterprise, the most advanced ship in the fleet, getting it's ass handed to it from a outdated BoP. I know the explanation given is that the BoP had their shield frequency, but don't starships have the ability to change shield frequencies? I recall episodes where they rotate through different frequencies. They couldn't do this?
Also, the movie is just lazy and half-assed. The mis-matched uniforms, the recycled screenshot of the BoP exploding (taken from UC), and of course, Kirk's death.
I'm a fan of TNG and I just didn't like this film. While I understand it's certainly not the worse Trek film, it's definitely far from the best. I don't think you need to be a hater of TNG to hate this film, the film has enough problems of it's own.
That's a fair critique of the film. Most of the problems that you mentioned were not things that bothered me (the plot holes didn't bother me one bit), but nevertheless I can see where you are coming from.
In that post, I was referring to the people who only criticize GEN for the death of Kirk. These people ignore pretty much the entire film except for that one moment, and then they label it as one of the worst films in the franchise. IMO, the only people who can fairly critique this movie are fans of the TNG television series. We're the most familiar with the characters and the canon, unlike a few snobbish TOS fans who just want to bash TNG because it's not quite to their liking.
I should also point out that since I wasn't born until 1994 I didn't grow up with TNG, so I didn't go into this movie with extremely high expectations. At the time I first watched GEN I knew that it wasn't very popular, so when it ended being pretty good I was pleasantly surprised.