Comment by dredmorbius

Linux GUIs follow different standards for different toolkits. Some try to use a relatively consistent core (GNOME, KDE, and xfce4 to an extent, I think), others can diverge widely. If you're old enough, or like collecting old software, you'll know several wildly inconsistent scrollbar metaphors and controls....

I find it slightly useful -- I can usually visually guestimate a tool's graphics toolkit and predict its behavior, but novice users will almost certainly get confused.

Like you I find environments I cannot keyboard control are hugely unproductive.