I think this is just as unlikely as the idea that Facebook is a law enforcement honeypot to track terrorists' social graphs. Your arguments sound somewhat plausible now, but back in 2009 bitcoin was just a cypherpunk's toy and no one had any idea how big it was going to become.

I would argue that a conventional internet currency (like egold or liberty reserve) would make a far better honeypot (easier to track, shutdown at any time, cybercriminals were used to currencies like that)