Board Thread:Versus Debates/@comment-36394790-20180824122210/@comment-26636534-20180830205537

@CombatIQmatters

I'm not refuting what was shown in the manga. I'm saying (again) we can't make a blanket claims without covering all basis. And no, you can't exclude Izuna and Shisui. Why? Because they are confirmed double MS users. You can't cherry pick there, sorry.

Itachi doesn't have authority because Itachi doesn't set the rules.