> It looks like developers in Ukraine, Turkey and Indonesia are getting stuck in Vim quite a bit: it makes up a larger portion of their Vim questions than in any other country. In contrast, in China, Korea and Japan the fraction going to this question is one-tenth as much. That might indicate that when developers in these countries enter Vim, they usually meant to do so, and they know how to get out of it.

I'd say no. I work in Japan and here everybody uses a Japanese equivalent of StackOverflow. This conclusion is so wrong.