Right now, anyone can burn a Linux distro install CD, boot a PC fresh from the store from it and install the distro with zero or minimal pre-configuration (the only potential barrier being the BIOS boot order). It would be a step backwards not to be able to do that any more, which is the reality as soon as UEFI secure boot is enabled on new PC hardware (absent the work detailed in the article). This is likely to happen within a timespan of months.
Yes, in this case Linux is having to run as fast as it can just to stay in the same place. But there simply isn't an alternative. OEMs are not going to sacrifice their "Certified for Windows 8" stickers based on political pressure from the Linux desktop distributions. And users who are told that the only way to install Linux is to fiddle about in their computer settings in order to disable a security feature will simply not install Linux.