That comparison was never drawn, though. It was just observed that DNA is old (true in fact) spaghetti code (true in fact) with clever code reuse (true in fact), dead weight (conjectured but plausible), stuff with no apparent purpose that nevertheless can't be removed without destroying functionality (true in fact), stuff that used to serve one purpose but currently serves a completely different purpose (true in fact)... all of these phenomena can be directly observed in a working cell. Granted, "spaghetti code" is a value judgment, but I challenge you to find anyone who thinks it doesn't apply to DNA.