ignorantGuru (the author of that article) ended up talking to Benjamin Otte, the lead developer behind GTK+ currently, about ignorantGuru, about the issue of themes breaking. Otte explained the reasons behind this, and acknowledged not ideal communication and developers and encouraged more to get involved to steer the project in a way that they find desirable. https://bugzilla.gnome.org/show_bug.cgi?id=687752#c9 As they say, put up, or hack up.