Too little weight is given to the fact that no consciousness exists because it has willed itself into existence. Put another way, nothing consents to being given life.
A feeling mind will come into being, suffer throughout life, likely watch you die, and eventually die itself because you wanted to feel fulfilled. I want a child, therefore I will bring one into this world. Often, it's said having a child is an act of selflessness. I see it the opposite way.
On the flip side, adopting a child is the most selfless thing you can do, in my opinion. Why do only 4% of American households w/ children have an adopted child*? The OP's blog post is surmising it's because we procreate to achieve some tangible sense of immortality, as we consider the passing of our genetic material to be the next best thing to actual in-the-flesh eternal life.
The anthropologist Earnest Becker wrote a book in the '70s called The Denial of Death which reaches much the same conclusion, only broader: that all of civilization is an effort to achieve symbolic if not literal immortality.
* https://adoptionnetwork.com/knowledge-hub/adoption-myths-fac...