Now I'm curious to find the old revision of this document, but the linked article seems (to me) to imply that the new no-uefi-secure-exemptions provision was added to an existing discussion of UEFI/ARM. I could be wrong, and I'm not sure the distinction matters significantly, the discussion here on HN was pretty clearly in regard to Microsoft's intentions with UEFI and whether it was about being anti-competitive or truly for security.