In Trek movies they are simplistic. Why do you dislike INS if it is really such a wonderful movie that features such a complex moral dilemma? So make up your mind, either you are right and there is indeed a complex dilemma which would make INS the most kick-ass Trek movie or it is a mediocre movie in which good guys fight against bad guys like in every Trek movie.
I guess I just see where Michael Piller was trying to go with the film before he was sabotaged by Berman, Stewart and Spiner. You should really hunt down and read The Making of Star Trek: Insurrection
. I see that Piller was trying to present a complex dilemma not trying to treat the audience like abject idiots.