I initially parsed that as meaning something like "we're clearly not getting the mechanics of evolution across, since people in the comics [and by extension writers] are happy to treat it as something that can produce superheroes". But in context it actually seems to mean "let's create some superheroes to demonstrate the efficacy of evolution beyond any reasonable doubt".

Comic exaggeration, sure, and I'm probably supposed to interpret the word "evolution" very loosely if I want to take the quote at all seriously. But in view of the former, I still can't help but think that there's something fundamentally naive about the latter.