[@jaredatch Member 14 years, 5 months ago]

bbPress is very much under active development. You can see that in the trac timeline – https://bbpress.trac.wordpress.org/timeline.

The spam periodically gets to a high level on the forums because

1) There are only a handful of moderators at the moment

2) The spam is human generated and most of it does not get caught by akismet

Hope that helps