We can, but it does not seem like a useful thing to do. Do we blame hammer makers for making better hammers?
I think a better analogy would be do we blame weapons manufacturers for making better weapons? Or, do we blame black hats for making better viruses?
Sure, but the point remains the same and it does not really change the validity of the argument itself. Weapons manufacturers have one goal and that one goal is satisfied by creating a better weapon. Even viruses have found somewhat unexpected uses ( stuxnet comes to mind ).