It's fair to say that most people can't hit this bug, or rather, they can't hit the grave consequence (a deadlock). To deadlock you need to specifically need shared access when you asked for shared access. A lot of people have code where they want shared access for improved performance, but they don't need it. This bug makes their code a tiny bit slower in some edge cases (where it took the wrong lock), they're not overjoyed about the bug but it has no significant consequences.