Elite players like him tend to do this, where they create false narratives to amp themselves and push even harder the next game, a prime example of this would be Micheal Jordon, heck even Kobe Bryant used to do it, I'm just a little surprised he said anything to the media, although I like it since it creates some hostility towards each team, making the games more entertaining. We have been asking for more personality and part of that is showing your annoyed or angry side too, I think he's wrong but again still it will definitely be more fun.