I'm the OP, and I have to pitch in here. This comment is a bit unhinged, basically claiming that every WIP GUI library written in Rust sucks on principle. This is false, and there are some very good ongoing efforts that will probably be great and desirable GUI options in the future.
Also, the comment claims that QML is not Qt. QML was added to Qt in 2009 and has been where a large proportion of the developer's focus has been ever since. It is absolutely Qt and you can't claim otherwise.
A bit of a passionate response to a passionate parent comment.