Moreover, that's not what I said. Being able to come into a project and work within its ecosystem is an extremely valuable skill. It's the exact opposite of the mentality that drives NIH syndrome. OpenBSD is an OS written for high security, high stability. They simply don't have time to quibble with the next big VCS thing, especially when they're not having issues with the old one. They know the edge cases with CVS, migrating an entire project and dev team to git or SVN or mercurial or whatever would be way more disruptive than just dealing with those quirks.

Side note: I'd be really interested to see an OpenBSD designed VCS. I'd be very curious what the design would look like.