Honestly, it never felt that way when I saw him play. When oscar or willian has a terrible match, I still see them running, tackling, and it looks like their giving their best. But when KDB had bad games, he just disappeared completely. This happens to people who don't have workrate, like ibrahimovic, berbatov or coutinho. Either he gave up already and made up his mind to leave since, or he just isn't that type of player.