Well I hear it all the time. Though you seem like the type where the instant someone disagreed with you you'd label them as someone who "didn't know what he was talking about", so yes, I'm sure no one you thought knew what they were talking about has ever mentioned it to you.
You complain when Kubo's story is at it's most cliched shonen tropes, and the one time a character's actions don't adhere the stereotypes, you label it as anti-climactic.
So when Kubo is being formulaic, you bitch, and when he's bucking the trend, you bitch. You're just making up shit to bitch about.