I'm not talking problems with DE toolkit applications. I'm saying that without the additional incentive to round down the sharp edges in Gtk3 with a custom distro patch set to get their DE working right (they won't have to because it's not gtk) they probably won't maintain the aformentioned required distro patches to gtk to fix all the frozen in bugs/feature removals. And so running gtk applications (most linux GUI applications) on these distros is more likely to have these sharp edges.