I agree with everything you say... except the part that he is incapable of playing good defense. Tharpe is fast and has decent lateral movement.
All of Tharpe's issues are mental. That becomes apparent with all his unforced TOs.
Tharpe needs zen. He needs to get a grip on his mind before he takes the court for a game. His head is spinning.... and usually his head spins most right at the beginning of a game because he needs to calm down a bit. If you look back over the season you will find that he almost always commits a cluster of TOs right at the beginning of a game. Those are mental TOs.
His defense stinks because he can't shut his mind down while guarding. So his guy makes a drive and before Tharpe can respond, his mind has to give him the go ahead. No way that will work... he lags behind. Those reactions need to come from instincts without the mind having to signal ahead.
The right kind of sports trainer could help him with that.
Then he needs zen to visualize ahead and get his mind and body in sync, working at the right speed where he will be most productive. Right now, his anxiety/nerves get the best of him and keep him running at an unproductive pace. His mind is speeding ahead, not allowing instincts to make any decisions... so he appears to be both too sped up and too slow, both at the same time!
I really don't understand why the coaching isn't on to this and helping him out. This isn't rocket science.
If they could work this out with him... we will easily win a national championship.... and he would be in the running for MVP. Yes... you heard me right... MVP! Because the guy is capable of playing phenomenal ball and being a dead-eye from 3.
But instead.. we sputter... we all get mad at Tharpe.... and his confidence drops and he (and everyone) is frustrated because of his play.
Sometimes this feels like we are watching a train wreck in slow motion! We can stop it... so why don't we?