There's plenty of things to critize on S60 UI, but that video certainly isn't the correct way.
1. He tries to answer the phone by tapping the screen, even though there is a big and animated arrow that show how it is supposed to do.
2. He switches the edit widgets mode on and adds Facebook widget. There's a big "Done" button at screen which he should push to exit the edit mode. Instead he ignores it and tries constantly to log on to Facebook, and of course gets edit options.
3. To choose text for copy & pasting he should drag his finger over the text he wants to copy, instead he keeps trying to choose it by tapping at the start and end of text.
4. He has chosen and high lighted a email folder, but keeps pressing the screen on the wrong spot. You can actually see the the "touch ripples" on the video and how he keeps pushing the wrong part of the screen.
To be honest, I don't expect much from a Engadget article anyway. That article is written by two two people. One is clearly a Nokiafanboi who gives Nokia too much slack. The other one is just a complete idiot, not that anyone should have to be extremly smart to use smartphones, but whoever did that video shouldn't touch anything more complex than box of matches.