Suspending disbelief at the movies

That’s your objection? Mine was that the damaged Data had some kind of previously unseen “Boy Scout” subroutine that, were he damaged in a particular way, would instantly make him become a super-good avenger of moral rectitude in case somebody had damaged him in an effort to manipulate him.

Data had been damaged in various ways over the course of TNG and nothing like this occurred. It only served to instantly and unmistakably remove all moral ambiguity from the film:
[ul][li]Damaged-Data is fighting some guys[/li][li]Damaged-Data will automatically fight on the side of the good guys[/li][li]Therefore, some guys are bad guys. QED.[/ul][/li]
And this was in the first ten minutes of the movie. It was downhill from there.
It wouldn’t surprise me if a significant percentage of the film’s audience didn’t know who G & S were. That a character 400 years from now who, it is well-established, has chosen to immerse himself in Klingon rather than human culture hasn’t heard of them isn’t shocking in the least. Actually, I find the level of familiarity with 20th-century culture shown by various TNG characters to be disbelief-shattering in itself.