I understand that getting a professional knowledge in coaching introduces an individual to aspects of the sports not known by all, but oftentimes i have witnessed individuals (spectators) of a sport, due to extreme love for a sport become masters of a sport so much that it seems almost like they now know the sport better than some coaches.

Whenever a game is going on say football, you always hear such individuals question the coach's line up and tactics, you hear questions like -

-Why is he (the coach)  not playing xyz?
-why did he (the coach) use player xyz instead of players zyx?
-why is he (that is the coach) using this formation instead the other one? and so on.

-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?