Anyone else find it kinda weird that this 'leaked' Froakie evo's name has ninja in it?

Why would they change the army rank name theme?

Rookie (Froakie) -> Brigadier (Frogadier) -> Ninja? (Greninja)

I'm not saying thats ITS A FAKE or ITS A REAL but I just find it kinda odd

I know about the bubble shurikens, bubble mask and ninja stance and I believe that Froakie is based of a ninja but the names just don't fit