The same is true for every star in the NBA. Very few go off the deep end like this.
You're making excuses for him. Yes, just every one of us said, did or at least believed some shit we're not proud of when we were teenagers or young adults. Growth is part of the human condition. But if you take up the mantle of a public figure, and you use that to put the spotlight on yourself, with that comes responsibility. Heavy is the head that wears the crown.
Put another way: If Mike Trout was a hate-filled bag of grievance, we'd have no idea, would we? You can "shut up and dribble" if you so choose, as a pro athlete, and be largely left alone. It costs you some sponsor dollars, some tongues will wag, and some would call it a missed opportunity to do good. But you don't have to insist on having everyone pay attention to you. Many do anyway - such are the privileges of sports - and then they use it for money, for good, or for awesome. How many use it for spreading anti-semitic conspiracies, or the equivalent?