It is nobody's fault but Tyreke's that he lacks a consistent jumpshot.
Not coaching, not his brothers, not his trainers, not his mom's, and not his teammates, or what position he happens to be penciled in at. He's a grown man, and people looking to spread the blame about that particular aspect of Tyreke's game are rationalizing.
We all know the line about Tyreke : "He's not a point guard, or a shooting guard, he's just a good player who scores, period."
When he tries to back an opponent down for the last 2 1/2 seasons (much less in college or in high school), it doesn't matter if he happens to be playing PG that night, or SG, or SF recently - the play on the court is almost identical regardless of position -
Tyreke has the ball, dribbling around the 3 pt line - looking for an entry with his defender in front of him.
Sometimes he stabs his foot forward, then settles back into his shooting form and invariably bricks it.
That has NOTHING to do with what position he officially is in that play - it all looks the same, and ends up being the same.
Hopefully he can figure out what countless other NBA professionals have figured out this summer, or his career is going to take a HUGE hit, and he's going to lose tens of millions of dollars. You'd think that would be motivation enough to actually make progress this offseason, and if it isn't, the whole world will conclude he will not likely get better.
His life, his jumpshot, his responsibility.