You, sir, obviously have no idea what Qt is.

From wiki: "Haavard Nord and Eirik Chambe-Eng (the original developers of Qt and the CEO and President, respectively, of Trolltech) began development of "Qt" in 1991. "

In 1998, there was controversy around the fact that KDE was becoming a leading desktop environment because it was based on Qt.

Qt does not belong on a list of unfinished operating systems released by Nokia.
Qt does not belong on a list of operating systems.
Qt is an age old framework for developing applications across hardware platforms, somewhat like, I don't know, Java.

Stating that Qt wasn't ready makes about as much sense as to state that Java wasn't ready when Samsung released their Galaxy S III.

The only thing that wasn't "ready" with Qt was that people hadn't started announcing their existing applications on the new hardware platform that now supported Qt, nor had they started making dedicated Nokia applications on the platform. And they never started, because Elop announced it to be dead pretty much before the products were in sale. Nobody makes applications any much for a platform that doesn't exist.