How is the presence of an antenna in any way demonstrative of the general purpose computing capabilities of the N900 as opposed to "not pocketable PC" Androids? I believe that if I were to attach a USB radio module to my phone I could write an Android app to make use of it as a trasmitter.
There are FM dongles that plug into a headphone socket, but building it into the phone from the start says to me that Nokia really knew how people would want to use it.
If the point is you can transform an android device into a general purpose machine if you use unenumerable amounts of hardware addons and hacks. Then yes, of course you are right. It will be unuseable in practice which is generally what people want to do.
