Scott, I think you make many good points in your post. There's one in particular that I'd like to touch on.
I think PowerBooks and Mac OS X are a wonderful match -- even more so that with the desktop machines.
The Airport networking (for newer books with Airport slots), the fast wake-up, iTunes on the road, iMovie, etc, etc have added new life to my PowerBook experience.
I understand you concerns about Apple's shortcomings too when it comes to supporting customers. As I said in the article, sometimes it feels like tough love.
But other times there are solutions and work-arounds that I just don't know about. Such as using Airport with non-Airport transmitters. I thought I was cooked with OS X.
But I found out that if I enter the Hex version of my password, I can connect. Weird! I'm sure that will be corrected with time.
That's why I think these forums are so important. We can help each other survive these exciting, but painful transitions.