A galloping horse is anything but a static object! It's art. I doubt the artist was trying to give the impression of a static object going nowhere, and to this viewer at least it flows and gallops in fluid lines of forward motion. But clearly that's not in the eye of every beholder.

No, not at all. Not even in the picture that came up from the link. From there it looks like a bunch of lines (and a dot). It only looks like a horse when viewed from a distance.