It is somewhat outdated, but yes, most of the points apply today.

Some things changed. Qt is pretty solid today. We use it as native Linux platform. We use native Windows and Mac front ends too.

Using Qt solves lots of issues very easy, like OpenGL drawing capabilities.

So in Windows and Mac we have two versions of our own software, one with native widgets, one with Qt ones. The Windows version using Qt is much faster and efficient, albeit a little ugly, because of OpenGL issues(instead of official DirectX) and font sizes or colors a little different from Windows and so on.