Because at the end of the day, both scripts have much better competition than the 'official' WordPress ones do, and I'm not quite sure why they're trying so hard to reinvent the wheel with them. For example, they could promote WPForo to the 'official' WordPress forum plugin instead, since it's far in front of BBPress in terms of features and style and generally seems to do everything better than Automattic's attempt. Same with stuff like WPDiscuz and WordPress.com's comment plugin. The former is simply far more powerful and far better in terms of aesthetics. So what do you think? Should the guys behind WordPress/at Automattic just give up on their 'official' plugins and replace them with better alternatives by the community? Or do you think stuff like BBPress could actually get somewhere meaningful at some point?