Ok - he’s an asshole. Monomaniacal athletes can be perceived as assholes or are assholes. MJ, LeBron, D Wade, Kobe, Butler - all were viewed by many as assholes. Obviously Sexton isn’t that good but he has some of their mentality which could upset some people.
As far as other players on your team not “liking” you - that doesn’t mean you can’t be an effective teammate. An unlivable asshole who can and does play is better to have that Miss Congeniality who sucks at the game.
Scout seemed to have a bug up his ass about Collin. Whatever. Obviously the reference to “top ten D” with Drummond gives Andre credit for all his DRBs (key input for D Rating) but anyone who watched the games saw his shortcomings (hilarious that Collin‘s stat padding is bad but Andre’s is good). If Drummond was good he would have received better offers, especially since he’s young.
Scout didn’t think much of KPJ either. That’ll upset some people.