If it's not a smartphone, why are all the features that are missing going to be coming over the air soon? Surely this wouldn't matter that they were missing, if it's not a smartphone.

because it's missing basic features that are expected in today's smartphones.

Better ring up Nokia then and tell them that the N900 is on their website listed under phones...

thus the reason for not marketing it as a smartphone?

Personally I really like the fact that it has voice functions. I wouldn't consider keeping an extra device with me without those functionalities (just a personal preference). The phone functionalities seem to be good enough for my infrequent phone usage so I can replace my E71 with it.

Skype alone wouldn't be enough for me. Most of the people I need to contact won't be reachable through it and I won't be around fast enough data connections always to use Skype.

...because they enjoy seeing the blood boil on the closed-minded and rabid fanboys that refuse to listen to anything but praise?

Is there a name for a Closed Minded Anti Fanboy?