I don't think it's surprising for a player to suggest he wants to win - or to suggest that SF is committed to winning. I'm sure he'd tell you that the Dodgers, Yankees, Astros, Red Sox, Braves and several other teams are all also committed to winning. He might even tell you the Jays are committed to winning.
You can draw whatever conclusions you want I guess - I just think it's dumb to try and read into it too much.
That said, he probably feels like the direction of the Jays is going south - which it is. I suspect most the players understand the Jays won't be contending for a World Series anytime soon. If you're an established player who wants to win - you don't want to play for Toronto right now, or for the next several years (even if you do feel as though they are committed to winning).