For the BIC pen thing to work, you have to match the correct pen for a given lock. If you have the match and the skills, you can do it in thirty seconds. But, there are dozens of variations of "round key" locks that have been made over the past three decades.

In the "real" world, crooks don't have the time, energy, or "balls" to sit next to a bike rack, trying pen, after pen, after pen, down on their hands and knees (a correctly installed lock is positioned just 19 inches off the pavement), and meantime looking over their shoulder to make sure the bike's owner is not walking up from behind.

And, that is why the number of PROVEN bike thefts using a BIC pen remains at zero. But like "ghosts", someone will say "Just because no one ever saw it, doesn't mean it's not real". And lots of people do believe in ghosts. That's way it is always easy to find a place to camp in a cemetary at midnight.