I think around that time was when Ubuntu switched from Gnome to Unity as well. What a mess that was. Seemed like all the UI teams had lost their minds at once.

Indeed, this is the dirty secret and shame of our industry that doesn't get acknowledged enough. We are so prone to group-think and follow-the-thought-leaders that as my parents would have said, "would you follow them off a cliff?" the answer as an industry is a clear "yes." We rarely seem to learn from the lessons of the past either.

Gnome 3 was also doing a major restructure, which forced MATE to be built. I liked some things about Gnome 3's original release, but I was insanely annoyed because a lot of it went away, I'm not sure if it was just distro specific or packages changed drastically, I don't even know how to describe the feature, but for example Gnome 3 had apps that could show / hide on the edges of your screen, so if you were logged in to MSN (or even XMPP) you could chat with someone, then it would 'hide' it was really cool how that was implemented, I was upset to never see it again on any other OS, it felt like a nice way to keep a chat window available but still out of the way.

People don't like when I say this, but it's just another piece of evidence that mobile phones ruined everything.

IIRC the true story behind that dark period is that Microsoft was making vague murmurings about suing everyone for cloning Windows XP, so everyone felt they had to run away from that.

The problem was that it was a bunch of people who had no good ideas and no insight trying to come up with new paradigms for interaction, and they were all bad. What the Linuxen desktops were doing was even worse than Win8, and the ones on that journey were all determined for some reason to deprecate the old WinXP clone UIs at the same time. Gnome really moved into a position of harassing and mocking its old users (basically regulation redhat behavior.)