Kishimoto himself pretty much stated what's on his mind when he's writing this manga
and this chapter encapsulates it nicely. No fucks given, logic is abandoned altogether just to hype a villain that we know ever since he was brought back that he'd be defeated by Naruto's rainbow powers.
I think Kishi is becoming the main advertiser for OP, SnK and other Shounen with this spectacular failure of a climax.
Edit: About using Susanoo without eyes, Dagoro is right, you shouldn't be able to use any MS doujutsu without eyes because they are channeled through the eye. Whether the eye is seeing fully or not is irrelevant.