What else is new? Team USA will just dominate this again. Giannis with the Bucks can't win the championship in the NBA. And his team mates in Greece won't be better than the Bucks. Unless USA won't have their top 5 players on board. KD and Klay are injured. Curry won't probably play. Leonard, PG and Irving will be busy creating chemistry with their new teams. 
You think Popovich is that dumb not to pick good players? This roster of USA for this FIBA 2019 is massive and I know they can ball and penetrate in and out of the court. If there are team that can go head to head with them that's for sure Serbia again or perhaps Spain.I think Popovich is the strongest part of this US team. He is with Phil Jackson the best NBA coach in the last 25-30 years, and he has tremendous experience.Another important thing is that his team (Spurs) always played team basketball, someone would even say European kind of basketball so i have no doubts that he will get the best from the players he got, there is no better coach for that task at the moment in the world.