Eh, to anyone complaining about fully controlling 6 tails bit in Naruto (complain complain complain!)
I just think that since it is not a 'true' 6 tails--a 'left-over' 6 tails, if you will, and he also doesn't have the volatile power source fucking himself up from the insides, it is not pretty far-fetched to think that the guy (a much more experienced Shinobi than Naruto) can command a full control of this 'fake' Jinchuurichi power. We do not even know if the guy can unleash a power comparable to Naruto when he brute-forced his way through Pain's techniques.
So no, this is not that far-fetched.
Anyways, on the scale of nonsense, far-fetched and ridiculousness I think this is waaaay much tamer than the story that features a giant mermaid swallowed by a giant whale and a guy capable of throwing anything at any distance and make them hit his marked target.