Despite all the spoilers, this is setting my curiosity. Yes, I know it's not perfect, and yes, I also know our standards are very low now, but it does look like something
I would personally watch, like, and enjoy. I'm ok with liking trash, I mean, I'm in this board, fgs. Do I think it's trash? Nah.
What part of the plot doesn't hold up? Only major issues I can think of offhand are the fact the borg repeated their mistake of sending a single ship when it didn't work the first time, they should have done the opposite and sent several, which would have likely led to winning the battle.
That can be explained by saying that the amount of energy they need to send more than one ship to Federation space and then to the past is too much for them to handle. Or that, considering the nature of the mission, it was better to just send a small group that was easier to control.
I like First Contact and the ST movies in general. I don't care that they're action movies because they
are movies. If they want a broader audience than the tv fans, they need to give them more than Picard talking for two hours looking for a diplomatic solution. That works for us fans, but I've seen these movies with non-fans and they enjoyed the action. I watched Generations with a friend who's not a fan and whose knowledge of Star Trek is just my autism and he liked it.