Nobody is asking for that. Well, except maybe the networking part which is anything but "working" at the moment for many people.
Most of the people are asking for the promised/hyped features. GT5 was a good game and we all (stupidly) believed GT6 would be an extension or an evolution of it. That's not being overly demanding is it? It would basically be GT5 with added content and features. Instead, it is a step backwards in many important areas.
Yes, they are. That is the point of the video: "non-technical" people "just don't get it", that's the joke.
A lot of business success revolves around appearance ("I can do anything; I'm an expert"), nobody really worries themselves too much with the substance ("You can't have 7 lines perpendicular to each other!"; "Who says?"; "Geometry."). Everybody is clamouring for the appearance of these features, without really stopping to think about their substance, and the techniques required to create that substance.
Obviously we all want the improvements, but a little bit of perspective goes a long way. Of course, other games have these features (with varying levels of substance), but it's more about integrating the substance of the new features alongside existing substance, by leveraging any combination of technology - the technology part people generally have zero concept of.
Hence your comment that people aren't "asking for" orthogonal matrices, completely ignoring their relevance to a 3D game engine e.g. rotations of objects, as a trivial example (my sound synthesis interest led me to research that exploits the properties of such matrices to take nice shortcuts with direct synthesis of engine sounds, if you need something a bit more abstract).
We don't know how much of the perceived delay is due to technical difficulties, but we don't know how much is due to PD's work ethic, their attitude or their ability to plan, either. Whichever you place weight on says more about you than it does PD.