I'm puzzled about where do you get these crazy notions about hardware..
Two words - OEM pitches. Starting with GeForce 600 series (nVidia) and HD7xxx (AMD), the "UEFI-ready" blurb has shown up in review after review of GPUs (not to mention on retail packaging materials and in their documentation). I'm quite aware that secure boot is NOT a requirement, but an option, on Windows 8/88.1 (the only two Microsoft OSes that even support it at all), even with UEFI on the motherboard. However, I simply wanted to be sure that I could keep my current GPU, as upgrading to a newer UEFI-supported GPU is still not an option at present (for price reasons) - I'd rather not basically be forced to upgrade due to GPU compatibility issues with the motherboard itself. (Basically, I'm looking to avoid getting stung at the last minute.)
Finally, a word about Secure Boot - it has exactly diddly to do with DRM, but a lot to do with rootkit avoidance. Some (not all) activation workarounds for previous versions of Windows were found to contain various sorts of malware, including rootkits - wasn't a rather significant number of PCs built by a non-US OEM found to be rootkitted? I build my own desktops, and I despise rootkits and other malware - they are the most pernicious of OS banes that I have to deal with on hardware that arrives on my doorstoop. Basically, Secure Boot is a belt, in addition to the suspenders (an additional security feature, like hardware SPI in broadband modems and routers) - you don't HAVE to use it, but there are non-DRM-related uses for it. (The one DRM use for Secure Boot is in businesses - not individual usage - Secure Boot helps insure licensing compliance.)