GObject is language agnostic in the sense that it’s terrible in every language. You still have another type system and memory model that is different from those of the host language, and you end up writing code that feels only marginally better than writing GObject in C. It’s all terribly disappointing in my experience. GObject has served us well, but if the Linux desktop is to survive, it needs a better desktop toolkit story (I left my suggestion on another comment in this thread).