Here's a thought, since the Bijuu knew about the Final Form, why didn't they warn anyone? Additionally, the ability to dispel ninjutsu, shouldn't one of them told us instead of Tobirama, a non-Uchiha, whom never read the tablet, and the younger brother of Harashirma whom never knew the Ridoku's story himself? Or am I just nit picking about irrational shit that make sense to someone else?
Show Me How Much You Have Evolved...(As Tian walks toward an Army he's been waiting eons for).
I speak 4 languages...
English, Profanity, Sarcasm, and Real Shit.