This seems like a poll from yesterdecade. I use all of OS X, Linux and Windows on a regular basis - often on the same computer at the same time. What is the task you are trying to accomplish? What is/are the best available tools to accomplish that task? Use them.
I disagree. She seemed much more clued-up - or at least willing to admit the ludicrousness of their visit - than her father, and she quite clearly stated that almost everything they had seen had been staged for their benefit. I found her post to be fascinating.
Yes, Schmidt visiting North Korea to talk to them about the benefits of being able to watch videos of cats on the Interwebs when the majority of the population live in grinding poverty and tens of thousands are held in forced labour camps is amazingly asinine, but that's not her fault. She was just along for the ride.