Why should O disclose who will start at QB?

so TD can get worked up about it

To appease bozo fans who think they are entitled to such information.

Frankly, as long as the player and team know who is going to start before a game I don't really care if the coach NEVER tells me, the fan, and I find out only when the starter runs out on the field to take the first snap.

Trying to let us know he has a plan, then after the game he will give the same scripted excuses.