The sad reality is that if your code is available for free and works most of the time, nothing else matters. I'm not sure I would call it "product success" given that OpenSSL's income is enough to cover, like, one dude in a LCOL country some of the time.
I think they're saying that OpenSSL is NOT elegant, but that it is successful regardless; hence, code elegance is irrelevant to whether a product is successful or not (and thus that horribly ugly LLM-generated code has a shot at becoming successful).
More evidence that "coding elegance" is irrelevant to a product's success, which bodes well for AI generated code.