As with the ssh example, you ignore the point in order to get in a lame insult. Do you feel better now? The point was that custom GUIs tend to be painful, especially when there's a perfectly good alternative.
Save As is not the same thing as Export.
Your email example is actually a good argument wrapped in boring vitriol. The difference is that email involves tens of thousands of messages, whereas desktop users only have a few VMs.
Sending MP3s via email was not a common use case 10 years ago, sending 50 MB PPTs and PDFs via email wasn't common 5 years ago... Limiting design to only serve the common use case would make the future a pretty boring place!