Chris ... I guess the short answer is this:
OpenACS is not a bboard system. Decent forums are important to us but I doubt many of us think that forums should be the primary focus of the project.
If we seem "serious" rather than "fun", it may be because a fairly large number of people make their living doing custom client work using the toolkit. I've worked on two major client projects this year. One of them doesn't include any bboards.
