if our supporting cast is good enough, he doesn't really need to.
Kawhi has had a big drop off defensively from his DPOY season ever since he rose to superstardom. And guys like Harden, Luka, Curry, and even Lebron aren't known for their defense
Two way player is simply a myth. when you are playing at a high level offensively, it is inherent that your defensive intensity will suffer. It is everyone else's job to cover those grounds defensively to support your superstar. Think of PJ Tucker, Draymond Green, Tyson Chandler, Andrew Bogut, Bruce Bowen, Horace Grant, Dennis Rodman etc.
But all we have right now are offensive weapons who can't guard a chair themselves. Too much load is being placed on Royce and it's going to hurt us comes playoffs.