I think dre is flourishing because he has been encouraged to drive and lanes are opening up off the dribble due to the amount of movement we do now. Trae getting off the ball sooner. Dre gets involved in the pick n rolls, sometimes with Trae setting the screen.
It's hard to really cook when you camp in the corner all game waiting for the kick out like in years past. Hard to attack the closeout when the defender is using the sideline as a defender (from the corner).
Dre is shooting so many free throws because of this. Also, with Dyson he isn't expending all his energy chasing the opposing teams leading scorer.