And for at least one good reason: we can elucidate laws of physics. Does this say that the set of laws we observe to operate are the only possible set and that the universe must necessarily have been?
I think not, thus Dawkins draws a distinction where there is only difference in appearance: Mount Rushmore's etching is the result of the action caused by physical properties imposed, which could have been otherwise.
I'm not quite sure I take your point. Care to elaborate?
I wouldn't know if that necessarily requires design, but it does require some characteristics remain constant. That could be taken as a corollary of design.
Evidently the "laws of physics" as understood by Dawkins stop far short of including statiscal physics.