Thanks for your posts.
There's a few of us here who will heartily agree with most of what you said. I was a Canon fan until the superior raw files from a $400 Nikon consumer body blew my 5D2 into the weeds! Well, at that time I was already a Canon fan in decline and searching for better options as I'd realized the 5D2, so hyped by fanboys, was a bit of a turd with very noisy low ISO raw files and a tendency to underexpose; or at least the one I had was.
Your example of the model, whose arm was in deep shadow, and looking like it has a bad rash because of the read noise, is a good one.
When pushing the limits, sure, there are plenty of "work-arounds" to make Canon cameras able to produce the desired shot. People doing that seem to be forgetting they're compensating for under-performing hardware! Poor hardware IS a good way to improve your skills as a photographer, as you have to be extra creative to overcome the limitations of your tools. Reduce the limitations placed on your shooting by those under-performing (Canon) tools and you're now free to benefit from a range of other advantages like less setup time, less time in post, more freedom and flexibility in lighting and exposure, etc.
Ardent fanboys will continue to argue that technique matters more. It sure does, especially when you chose to use gear with more limitations for certain kinds of shots.
As for the lens argument some make, sure, Canon has some excellent lenses. But there's also plenty of good glass for Nikon and no matter how bad the Nikon lens may be, it still doesn't change the read noise issue.
My D800/e are my favorite bodies for my kind of shooting yet and I only wish I would have not been so prejudiced in the past so I could have benefitted from using the advantages of other camera brands much earlier. I haven't purchased a new Canon camera for years now. But I have purchased Nikon, Pentax, Fuji and Olympus and have enjoyed the benefits they all bring while none of them are as limited by FPN and read-noise issues as Canon.
Despite the sales and marketing success, Canon is now the underdog, and I actually hope they can perform some sort of a comeback miracle; it might give me one more tool to use.
EDIT: BTW, I would not be surprised if Nero isn't already pondering and composing an acrid response to your posts.