Many many Linux users are all for nice UIs, and pretty animations. Which is why GNOME, KDE, XFCE, MATE, Cinnamon, Budgie, Pantheon exist in the first place.
The sheer amount, variety and quality of themes available for a typical Linux distro puts your point to rest.
The sheer amount, variety and quality of themes available for a typical Linux distro puts your point to rest.