Well the rumor included the statement 'when Alonso is ready', so the fact that he isn't now doesn't change anything about what the scout said.
Except that the "plan" is now the hibernating kind. Who can take that kind of rumor seriously?
Now, it's certainly possible the team will one day trade Votto and replace him with Alonso. What I find completely implausible is that some guy talking at a ballgame in 2009 can know what the team has designs on doing a season down the road, as if the team itself knows.