idk about others, but for me, KDE feels unpolished. Besides breeze, nearly every theme feels or is unfinished. Now, gnome is also pretty finicky to theme, but in the end i had some pretty uniform and fully featured results which I haven’t been able to replicate on KDE. Also extensions on gnome are pretty neatly implemented. The only downsite do gnome is how stingy they are with Wayland (No server side decorations and other important features)