So essentially...
There are varying reports of Crosby having setbacks this summer. When contacted, his agent neither confirms nor denies whether Sid will be ready to start the season.
The press runs with the story and every writer shares their opinion. One says Crosby should retire immediately. One emphasizes the lack of concrete information given by all involved and turns it into the plot from a mystery novel of sorts.
On top of all this (the misinformation, the speculation and the general lack of facts given) we have the nature of head injuries in sports which is a science that is in it's infancy.
The bottom line is that nobody really knows what's really up- especially writers and fans not connected to the game. Regardless, it seems like levelheaded hockey fans can all agree that no matter what Crosby's health is at the moment, the utmost care and precaution should be taken (which so far it has been) and that the game is better with him healthy and active.