Here is an excerpt from Roger Ebert’s review of Star Trek: Nemesis, released in 2002:
“I've also had it with the force shield that protects the Enterprise. The power on this thing is always going down. In movie after movie after movie I have to sit through sequences during which the captain is tersely informed that the front shield is down to 60 percent, or the back shield is down to 10 percent, or the side shield is leaking energy, and the captain tersely orders that power be shifted from the back to the sides or all put in the front, or whatever, and I'm thinking, life is too short to sit through 10 movies in which the power is shifted around on these shields. The shields have been losing power for decades now, and here it is the Second Generation of Star Trek, and they still haven't fixed them. Maybe they should get new batteries.”
So that explains why he didn’t like J.J. Abrams’ new Star Trek movie!