So arguing for ID is a non-argument (I don't know the technical logical term) because there is no way to compare how a designed universe differs from a non-designed universe because we don't have access to a non-designed universe.(or designed, depending upon your personal belief system.) Thus, design neither proves nor disproves a Creator.
Is this what you're saying?
No. Almost, but not precisely.
Depending only upon how one defines the phrase 'elements of design' ID theory IS capable of finding elements of design in the building blocks of life.
What ID theory is incapable of is finding the "elements of design" in life, if there are any to be found, of a designer who designed life and everything else in the universe, as well. This is because everything else in the universe will display those same elements of design just as surely as life will. Without contrast, nothing can appear.
From this it follows that if ID theory does find elements of design in the building blocks of life, then the design that it will have found will be that of a designer who did not design everything else in the universe as well as life.
This will be strong evidence against the notion that life, specifically, was designed by the Christian God if the Christian God is defined as a being who designed everything in the universe.
It will be strong evidence for the notion that life, specifically, was designed by a lesser being such as some form of extraterrestrial intelligence.
As for your last remark in the quote above, ("Thus, design neither proves nor disproves a Creator") -- when will you ever learn that NO result of any possible experiment can disprove the notion that some being exists outside of the universe? The claim itself is nonsensical. Upon what evidence is it possible to form the tiniest belief that there is an "outside" of the universe? If "universe" is defined as "all that is real" then clearly, by definition, nothing real
can exist outside the universe.
If an outside of the universe existed, how would it be possible to know anything whatsoever about it? How could we, we trapped inside the universe, experience what is outside it?
The whole notion of "outside the universe" has arisen since the medieval Christian notion of a "heaven" located somewhere above the clouds evaporated. God had to be placed somewhere, so why not place him somewhere that doesn't exist? It's just more god-of-the-gaps stuff.