I can confirm. While there is a fair amount of train infrastructure, it is horribly unreliable. Plan for being delayed for 30-50% of the scheduled travel time.
Qcom is a corporate behemoth, much like Oracle. In the immortal words of Bryan Cantrill, it is a lawnmower and if you stick your hand in it you'll get it chopped off.
Nor have we seen any serious uptake of Intels licensing business. It's a paper launch.
Adding to that Intel didn't exactly pick this model as their first choice. The combination of a wafer production shortage and Intels CPUs underperforming is what drove Intel to this. It is neither Intels or most feasible clients first choice.
You can run Wayland on NVidia drivers, but then your desktop environment has to support EGLStreams, which isn't a requirement for any other drivers and as such isn't implemented in all DEs.
NVidia is broken, not Wayland. They refuse to implement the same APIs as everyone other driver does.
Wayland is 10 years old, and extremely stable. If it isn't working properly it's either your driver vendor or your desktop environment that is to blame.
The kernel very much returns sentinel values, if something more complicated has to be transmitted error codes are commonly used.
I see nothing wrong with it.
The processes are all non-digital, and have many steps like Notaries for example.