Earlier quoted context omitted.
The author didn't characterize his position accurately. He meant "Windows Server", not "Windows Desktop". Similar to how IBM sold off it's laptop business to Lenovo, the strategy is basically saying that "We're a business services company, there's no growth left in the end-user ecosystem anymore, because all of that growth is in mobile, which we suck at, so let's just double down on what we are growing at: cloud serv…
If that's true, yes, Windows Server has been irrelevant for some time. It wouldn't explain the remapping of Office, though.
Most definitely not. There are a ton of Microsoft Certified Somethings that will refuse to administrate Linux servers unless their life depends on it.
Source: I work at SAP's internal cloud unit. We have to support Windows VMs (begrudgingly, if I may say), even for payloads that could run on Linux.