And no, you are incorrect. [...](blah blah)
Yes, very nice, some stuff from MSDN, but irrelevant. The UEFI specification does not contain that clause. Unlike the contents on MSDN which changes almost daily, it is the published, official standard that really matters.
Who knows what this particular paragraph MSDN is about and what validity it has, but since it contradicts the UEFI specification, it is quite probably deliberate misinformation (you could say "anti-FUD").
You're conflating two things. Windows 8 tablets running on ARM devices and Windows 8 desktops / laptops / tablets running on x86 processors.
No. I never mentioned x86 in this context. I was talking about desktop ARM.
The facts, which are the same no matter how much you try to discuss them away, are: In order to get the little blue "Windows 8" sticker which every manufacturer wants, a computer must comply with Microsoft's compliance document. At least insofar as to make the auditor happy.
This document says that on the ARM platform, secure boot may not be disabled. It does not say "ARMv6" or "ARM mobile devices", or "ARM based phones", or "Surface". It says ARM platform, that simple. ARM platform includes desktop computers running on ARM CPUs (present or future). You can discuss about whether that may or may not change in the future, or how it is probably meant (in your opinion), but that does not change the fact that the wording includes any and all ARM platforms.