-Is there a possibility that spectators of a sport like you and i with no professional training can develop a better understanding of a sport than some professional coaches of some teams?
It's not spectators have a better understanding but their analysis makes sense. And as a spectator, they observed well the team's performance. They are more a bit of relaxed that's why they see everything from the team's advantages to the team's disadvantages.
Just look in NBA for example, most famous analysts is not basketball players before. And those players who end up as an analyst is not good at making analysis, speculations, and predictions.