@ablackcatstail, yeah, it is :)
In shame, GTK4 is notoriously resistent to change, so it looks different even on other desktops, thus it is common to spot how it looks: big, round and flat, there's a themmer for it (Gradience), but it's not very powerful (except the UI is excellent), and kinda needless when you don't use Gnome, because anyway it will look unlike your desktop