What a load of fud that blog is. WP8.1 is an OS which is starting to gain traction, having owned/used several phones WP8.1,has to be my pick.
IOS - I find the Apple hype machine sickening. Having tried a couple of iPhones they felt like a step backwards. The worse example is the iPhone 4. Peering into a tiny screen with a so called retina display. Then the releasing of the next iPhone, wait a minute its doesn't look any different. The quality is also questionable, there have been a few issues over the years. But the well oiled hype machine or just blind love takes care of that. Don't get me started on ibooks/powerbooks.
Although I do enjoy classic Macs.
Android - fragmented, slow, lockups. The layout is a mess, as for the collection of apps I prefer quality over quantity and I got tired of the adverts and stuff getting pushed to my phone even with adblocker installed. Sony Z series of phones look great and the one plus one is looking good. As for Samsung their best piece of work was th S2 since then I haven't been interested. The S3 has some design issues, especially the USB connector cracking on most of them. But I'll stop the... Have to go to work LOL.