Indeed - when you can’t hide a thing by blending in, the next best thing is to try to make it difficult to tell what the thing is, which way it’s facing, or how many of them are present
Indeed, and if the patterning of the prey makes it even slightly unclear which direction it will bolt when attacked, that’s an advantage. It doesn’t have to work every time - just needs to be better than not working at all.
“Pick a spot” is needed by us humans, too. Targeting a general shape simply doesn’t work in the real world.
Direction of bolting is indeed crucial information to a foot chaser, animal or not.