@Roy, playing by my own rules, here are my thoughts, please quote or steal as you see fit.
That statement is incorrect. GAs always produce results, but often not the result desired by the programmer. Expertise is needed to corral them into a particular task, but this presumes a programmer. Rope is making a prior assumption of design, not following evidence to design. I might comment for myself on this Bayesian angle.
Never in ID literature is the incredible efficiency of GAs considered “Big O of N*log(N)”, thanks to massively parallel processing. [I will find a citation for that]
There are more recent results for GAs being used to create computer code that should be cited - I’ll look for that too.