go-qml/qml is just a tiny wrapper around the QML API, which is nothing compared to this. This library covers the whole entire Qt framework (Qt Widgets libraries + QML + everything else).
It for sure is. However QML might also be all you are interested in, since Go already has a very good standard library which covers lots of things. Then the remaining question is which of those Go QML wrappers is of a higher quality and easier to work with.