Probably because your perception of disaster is subjective and at odds with reality. Yes, I know, Linux is the desktop of tomorrow. And always will be.
Gamers will flock to Windows 10 when a significant amount of product makes good use of DX12. There is no rush for them before then and it's still quite early yet for developers. Microsoft knows this and is doing what they can to move things forward but no amount of resources can substitute for the time needed to get a handle on major API changes and create products.
Stuff like SLI and other multi-gpu approaches has been demoed with every graphics APIs to come down the pike since the 90s. That doesn't mean the API is going to receive widespread adoption, just that another checkbox has been filled on the demo chart. You aren't hearing much about Vulkan because it's mainly in use where the consumer has little concern about such matters. Just as for many millions of console gamers Unreal Engine is just a name that goes by as part of the opening credits. PC gamers care a lot more about under the hood stuff than on most other platforms. It's part of the attraction if you have the inclination.
In much the same way you don't see a lot of articles about the changes to Android's runtime infrastructure. It's really important stuff for the platform but a very limited audience, outside of developers, for the interesting details.