Tatum may not be Durant, and let's face it, who is? KD's probably the 2nd best player of his generation, and the best offensive forward in the league for much of his career.
Yes, he goes into Kobe Bryant mode sometimes, and I get frustrated by bad shots as much as anyone, but IMO, he's an all-nba caliber talent, Ainge is never going to trade him. Much of our inconsistency as a team lies at the feet of Tatum's (and Jaylen's) inconsistency, but that's something we're going to have to live with til they're mature NBA players. And unless you're a transcendent mega star like Lebron, you aren't at that point at age 21.