So you're saying that they're NOT hacks, when they're actually titled "Hacker Editions"?

Hacks aren't necessarily done by individuals. Organisations can produce hacks too, and there's no reason why they can't be officially supported.

I do actually read quite a lot about open source and its culture, and I read things like the Hacker's Dictionary:

http://www.ccil.org/jargon/jargon_23.html

Look at the entry for Hack:

Originally, a quick job that produces what is needed, but not well.

This sums up the OS2007 Hacker Edition as far as I can tell. It's unstable, and practically unusable. If Nokia wanted to take the time to make it stable, they could, but they just can't spare the resources.