Dear Sam,
I don't see your point in discussing the text… can you tell me where in this text you see an unhelpful, inconvenient, geeky-stupid text?
The point of this text is to give an easy explanation of why open standards are important, taking the example of emails. In doing so, it also tries to raise awareness on some Open Standards such as ODF and OGG.
All the rest is up to you and the others, to refuse or accept mp3 files or not. I don't care and I do not want to discuss in the text to reject mp3 files because they're not Open Standards: I understand it is about convenience, but I want to say that convenience comes on both sides. That's all.
Best,