Why Naruto Fillers is IMPORTANT

[YowYan]

Still, you have to admit that filler characters like Captain Amagai, Koga Kuchiki, and Jin Kariya are far more bad@ss than any of Naruto's crappy filler main villains. They all suck with the exception of the movie villains.

True that, though I found either Bleach nor Naruto's filler battles interesting.
But I mainly focus on the animations through battles like the hachibi vs sasuke swording. That was epic, even Bleach doesn't have that much interesting fights if you look at the animations with a criticized look

 

[TheWillofFire]

So if Fillers didnt exist, Naruto would be cancelled right away.

This was one reason why Bleach was cancelled, anime chapters didnt keep up with the manga.

Im confused, if fillers on naruto did not exist, would be cancelled?
And bleach was cancelled because of fillers existing?