The Hololens idea is retarded. Thinking that people will wander around wearing goggles (which is different than rift, which is stationary) is absurd. Whoever was in charge of that project at Microsoft may have taken the legal marijuana in Washington state a little bit too far.
I also disagree with Oculus ditching DX9. There's no benefit to anyone by doing that, they're just excluding users for no real reason other than "it's old." It breaks trust with developers because if they can kill DX9, they can kill DX10 as well (as DX10 is also quite old, circa Vista era).
They're alienating paying customers and developers with their decisions, and wasting developers precious time as well. Scawen spent months implementing DX9 and Rift support in LFS, and now that's (nearly) for naught.