If anybody is dumb it's Microsoft for adding such a blatantly stupid feature.
It's stupid because:
1. It's not obvious that double-clicking the window will put it into some goofy title-less mode.
2. It's easy to accidentally double-click the window, at which point there is no indication what happened, and no way to know
how it got to that state, and thus no way to know how the heck to get it back.
3. Double-clicks on the client area to change modes in a non-obvious way is also dumb. It should require a menu option, and when enabled there should be a clear method to turn it back; there's plenty of space at the bottom for a button, after all.
4. Perhaps most importantly, The number of people using "Tiny footprint mode" as it is called voluntarily is probably a lot less than those who accidentally enabled it and have no idea how to get it back.
The user is never responsible for stupid design choices. The taskbar mode change on client area double-click is perhaps one of the dumbest, least useful, and most problem-inducing "feature" added to any MS applet.
