"I think that's probably the stupidest thing I've ever heard Adam say," Barkley said on ESPN's "Get Up!"
"That's the stupidest thing I ever heard any commissioner say. Listen ... these guys are making $20, $30, $40 million a year. They work 6, 7 months a year. We stay at the best hotels in the world. They ain't got no problems. That's total bogus."
Barkley added, "Let me tell you something else, Kyrie Irving ... I've never seen a person so miserable."
Charles says K.I. has absolutely ZERO right to be upset with his life ... saying he's a millionaire, he's famous, he's a superstar, he's got a ring AND he's in movies.
"He's got to be one of the most miserable people I've ever seen."
Barkley's advice for Kyrie was simple ... DEAL WITH IT!!! -- 'cause as an NBA superstar, that's just the way life goes.
"Dude, we're paying you $40 million a year! You ain't never going to get away from this!!!"