Flawed Fiction

Just watched the recent move “9”. Very frustrated in the plot. Let me see if can sum it up for myself:
Scientist invents intelligent machine. Machine is used to make more war machines. Machine turns on humanity, goes all Terminator/Matrix. Scientist makes nine sock puppets, puts nine different 'parts of his soul' into sock puppets. Before he dies and the last sock puppet awakens the Scientist ends up with the freaking On Switch for The Machine. Ninth sock puppet wakes up. Finds key. Plugs it back into the broken Machine. Machine wakes up starts mission over again. Sucks in 5 of the 9 sock puppet's essence. Ninth puppet grabs On Switch. Blows up The Machine with it. The 5 dead sock puppet 'soul pieces' vaporize happily into the air.
Uh. So. As far as I understand it, the world is not left in a better place. Nothing really changes. How did the Scientist end up with the On Switch to The Machine? If he had it, and the machine wasn't working (which is implied since the re-acquaintance with the On Switch brings The Machine back to life), why did he keep working on the sock puppets? So many plot holes for something so visually interesting. It wouldn't take much to spin it into an encompassing, cohesive idea but no attention was paid to that. So much potential, wasted. Alas.