I’m noticing more and more Apps actively trying to avoid Themes and instead opting for the fixed default look. Even some of the Default Gnome Apps. And then there are initiatives like Please don’t theme our apps. Is this the slow death of GTK Themes, and if yes, why?
it’s just that gnome devs are super fast pace crazy scientists. anything that sounds wild, they gotta try it and often they have to abandon something that worked fine to do the new experiments. they had custom theme engine plugins as shared object files, JS window management, CSS themes, SVG icons, app specific buttons in title bars, JS extensions and they’re not gonna quit. if you use gnome and you rice your desktop, you better prepare to port your theme at least twice per year.