lol, according to the movie, he gotta seal each element into a seal. A skilled person would catch on and counter it. Meanwhile Naruto's shadow clones can rasengan you.
But if you think fighting a large number of shadow clones easier, then okay.
So. Still gotta put in the work. You're acting like he just played all 5 exodia pieces on the first turn.
I'm not talking about the clones, but he device.
With Bolt, all he had to is use the scroll device. He may be able to use the clones skillfully, but that has nothing to do with using the scroll device.
With Naruto, even if he uses kurama chakra, he still must be able to skillfully control the chakra and perform the clone jutsu. IE: When Naruto fought Neji and he blocked Naruto's chakra path, if Naruto wouldn't learned how to control kurama's chakra the battle would have been over.
Place Bolt in that situation and it wouldn't have made a different because he still would have been able to use the scroll device. All he is doing is releasing the jutsu that has been placed in the scroll device.