I'm a singer so maybe I'm biased, but he is just not that good. Howie said "I know you've got more range" and I completely disagree. He's struggling to hit the notes he's already hitting. He's using his grit to carry his voice, and the way he does his grit is gonna tear his voice to shreds if he keeps it up. There are healthy, safe ways to add grit to your voice, and the way he does it is not one of them.
He's reaching to hit high notes, you can see it on his face. He's singing with his throat and it's gonna come back to bite him if he doesn't start working with a coach. I'm sure they probably give him a vocal coach to work with off-screen.
Idk I just don't get it. I know Mel B just thinks he's hot and that's why she gave him the GB, but beyond that I just don't see it. Better singers than him have already gotten voted off this season.