I didn't read the article so can't comment on it but my approach is very simple. Discard any argument that proposes god as an answer to complexity.
By invoking god you bring in the baggage of heaven, holy spirit, miracles and all manner of supernatural mumbo jumbo. Ridiculous.
A complex question isn't answered by raising a myriad of ever more hyper-complex ones.
From the linked article:
The evolution of sex (and its accompanying reproductive capability) is not a favorite topic of discussion in most evolutionary circles, because no matter how many theories evolutionists conjure up (and there are several), they still must surmount the enormous hurdle of explaining the origin of the first fully functional female and the first fully functional male necessary to begin the process. In his book, The Masterpiece of Nature: The Evolution of Genetics and Sexuality, Graham Bell described the dilemma in the following manner:
‘Sex is the queen of problems in evolutionary biology. Perhaps no other natural phenomenon has aroused so much interest; certainly none has sowed as much confusion. The insights of Darwin and Mendel, which have illuminated so many mysteries, have so far failed to shed more than a dim and wavering light on the central mystery of sexuality, emphasizing its obscurity by its very isolation.’
So even if you are not invoking God, you are leaning toward not understanding something complex and opening a door for something more complex to be the answer. One enormous hurdle leads to putting up more hurdles.
That still falls back to "We can't explain, therefore- God."
We don't have all the answers about origins. We never will unless we could invent a time machine. Even if we produce life from nothing and cause it to evolve in a way that is similar to the path that earth took, it won't prove that things did happen that way.
But we've grown past ".....therefore- God." When we don't understand the proposed answers, we still have to deal with degrees of certainty and which explanations are most likely, most probable, most consistent with the reality we experience, and address the most issues of our understanding.