I would disagree with this. I haven't worked with QML, but I have worked with WPF which also supports two-way data bindings in a manner that I would guess is similar to Qt. The major difference between the approaches is that React embodies the functional approach. By describing your UI as a pure* function of your application state, you get a lot of important benefits.
Several academic papers on functional reactive programming specifically discuss QML implementation, so I suspect a comparison to WPF is superficial. You may want to take a look at QML before dismissing it. I've seen react developers who have used QML say that the experience is very similar.
* https://en.wikipedia.org/wiki/Pure_function