Step 1: Assume that Craig Venter succeeds in developing an artificial life form and releases it into the wild.
Step 2: Assume that a researcher (let’s call him John) later finds one of Venter’s life forms, examines it, and concludes that it was designed by an intelligent designer.
Step 3: John’s design inference is obviously correct. Note that John’s design inference is not any less correct if he (a) does not know who Craig Venter is; and (b) is unable to say who designed Craig Venter.
Now that was easy. Does it say anything about the paucity and/or weakness of our opponents’ arguments that they think the “Who designed the designer” argument is one of their best?