I've swayed back and forth between thinking of 'intelligent
design' as tautological and not, for exactly the reason
you have mentioned.
As a verb, 'to design' REQUIRES a design intelligence.
This is, I think, why IDists focus on trying to proove that
biological systems were designed -- and therefore intelligently
so.
I think the use of the word 'design' for the end result of natural
processes is more for brevity -- otherwise we'd have to say
something like 'structures developed via natural processes which
have the appearance of design' all the time.
PS: Robin is a quitter -- he left and became Nightwing (which
was just a poor copy of the persona Batman took on in the bottled
city of Kandor) and his replacement (Jason Todd) got beaten to
death by the Joker -- how can Robinism be of any worth?!??