This article was written in the sense of bashing gnome but yet some points seem to be valid. It explains the history of gtk 1 to 4 and the influence of gnome in gtk. I’m not saying gnome is bad here, instead I find this an interesting to read and I’m sharing it.
Not sure about the similarities here, but I actually love GTK when it comes to app design. It’s one of the things I miss about Linux in Windows. (Yes, I’m a Windows user—not by choice, though.) About the only thing I hate about it is that for some reason a lot of GTK app designers think a simpler design should mean less functionality. Gimme my damn right-click context menus dammit! >_<