Well I didn't watch the vid and I do very much love Sonar (when it's working which X3 seems to be working almost flawlessly) I would not exactly say it's the easiest to use or most intuitive program out there. Now that I know my way around it it really is amazing and I'm getting a lot of cool stuff done as well as having a bit of a creative renaissance due to all the tools and goodies BUT it took a looooong time for me just to grasp the basics... and I still have a buttload more things I need to do intensive studies on. Granted I may not be the sharpest bowling ball in the sea but in comparison I managed to record and mix an entire album in my old DAW (which shall, as always, remain nameless) without ever opening a manual or watching/reading any kind of tutorials. I just kind of poked around until things worked and within a few months I had something deemed releasable by my bandmates, engineering friends and an industry respected mastering guy who offered to polish the stereo waves for FREE because he liked it so much (I personally thought it sucked once I took it out of my own studio to other systems but whatever).
So if the sole point is that Sonar is a little difficult to use then I kind of have to agree, to a point. Once you know where stuff is it is actually quite a bit easier but getting to that level of understanding is a little tedious and frustrating.
Once those barriers are overcome though it does seem to be very conducive to actual creativity as opposed to just another sterile means to record one's material. It's almost like it is an instrument itself and must be learned like an instrument to really unlock its potential.
Just my take on it... not that anyone asked. ;-)