I wouldn't detect shooting as JB's biggest deficit, but his bad offensive decisions. Like, forcing his shooting, dribbling, bad passing and clutch moments when I can't remember was at least once successfull.
His biggest impact is defense. Last night how he deflected Bam around 5min in 4th q. was for the books. And we know how good Bam is.
I simply resigned myself to the fact that his offensive habits would never change.