Yes, but there is similarity between the sliders in that picture you show here. When you make 9 different sliders, it distracts from the settings being modifie

Yes, but there is similarity between the sliders in that picture you show here. When you make 9 different sliders, it distracts from the settings being modified, and directs attention towards the UI itself. This is probably one of the oldest no-nos in traditional design. In the original example, the Color Balance and Layer Blending tools clearly should have been drawn from the same mold. Ditto for Brightness, Pencil Width, Blur Width, Layer Style: Scale.