Is Ubuntu use tailing off?

This google trends graph shows a slowdown in searches on the topic of Ubuntu. Reason for concern is the withdrawal of Adobe, who say that they will no longer be supporting the Linux version of the popular AIR platform, due to flat-line growth of the Linux desktop. Is this just another attempt to kill off Linux, or are we experiencing the impact of Android and other tablet platforms? The Community is going to have to come up with a lot more than a few lenses to maintain public interest. What can be done to save Desktop Linux from itself? Your comments on a postcard please. Just kidding, you can comment below.