Why would that be a better example? BSDs don't write all their own desktop software. Ok, they will be some edge cases before you jump in with "OpenBSD wrote cwm". Generally speaking, there will still be a lot of other 3rd party software too such as GIMP. So BSD isn't going to be any different to Linux in that regard.
However this is all moot because the point I was making was about the centralised source repositories; those will contain not just the sources of the base Linux / BSD system (kernel + user land) but also any other source that are offered as binary packages as well (ie all the stuff that's part of the platforms build system)
