The thing is that Alex Smith is, has, and always will be a total team player.
He's twice re-signed with the team when I believe most other players would have decided that it was time to move on to a new workplace.
He's been beaten up and humiliated by the fans, media and former coaches here but he always says and does the right by the team.
Though they denied it, the Niners pursued Peyton Manning when he was a free agent this past offseason and explored trades for Smith.
However Smith has always taken the high road and said earlier this week about Kaepernick:
“In my opinion, if you can’t be happy for your teammate’s success, you’re playing the wrong sport,” Smith said, via Matt Barrows of the Sacramento Bee. “Go play tennis or golf or something. It’s ridiculous, I think. That doesn't belong in team sports, in my opinion"
In talking about losing his job partly due to injury Smith replied:
“I guess you don’t expect anything. This is the nature of the game. The next guy steps up and plays well. That’s part of the deal in this game. Competition is part of it as well. Don’t know what’s going to happen.”
In the event that Kaepernick has the usual bumpy road that young quarterbacks have and has to be sat down for a quarter or a game or more, Smith will come in and do his best to get wins for the Niners.
I see no way that this situation will divide the team, mostly due to Smith's great character and perspective.
So in other words, I think this is a mostly win-win situation for the Niners.