Boston's offense is humming in the sense that they're keeping the ball moving and Kyrie hasn't been selfish dropping into isolation, something he had struggled with his whole career.
As far as defense though, it's the same damn argument. Kyrie proved that he could play defense in the 2016 Finals, it's just that he rarely ever did. That's somehow an indictment on Papa Lebron, who apparently is always responsible for Kyrie's effort level on both ends, and not on Kyrie or the coaching?
Not to mention that while Kyrie playing well on D, it ain't like his defensive play is driving Boston's success. Smart is still the top defender on the perimeter and Kyrie's only faced one elite point guard so far this season.
You my dude, but that's incorrect. Kyrie leads the entire league in steals(2.4 per game) and has the 9th BEST defensive rating (93.8) in the entire NBA right now.
His defensive play is every bit driving Boston's success so far. Is it sustainable who knows? But as of now, he's playing defense at an ELITE level.
So for the first time in his career he's actually looking like a 2-way player who's impact on the game isn't just offensive.