I was on the fence as to whether or not I wanted to watch this, but I went for it.
First, the guy whispers in all of his interviews in the recording studio. It's creepy. He seems like he is trying to be philosophical and create phrases that will hit everybody in the heart, and to help him achieve that, he whispers quietly and waves his arms. I kept waiting for him to say "We have to keep it down or we'll wake the baby that's sleeping in the next room..."
The rest of it feels like Garth is standing behind the camera writing and directing all of what's being said so he can look good. Even the stuff he says is so cheesy it's just not believable.
I feel like he had a fairly uncomplicated life and rise to stardom, but he found a way to drag it out into multiple episodes, and make it seem more dramatic than it was... Love the music, but strongly disliked this documentary.