That has nothing to do with this SPECIFIC argument, I didn't read a word of it. I.e., I'm not singling out this particular set of essays / arguments / etc. The problem is much more fundamental - this boils down to claiming that "the universe is 'solved'".
That one species that got to just enough of a base level of mental ability to be able to think, when looking in the mirror, "hello, gorgeous"... and, on one dinky planet in one non-descript arm of some random spiral galaxy in a universe so absurdly vast that it makes our lack of understanding of ourselves, and the one planet we live on, a 'ING FOOTNOTE, ... can come up with some sort of rigorous argument to "uphold our magnificence" and "preeminence" ... as, apparently (to some), both "God's [special] children", and also "God" ourselves in deciding such "cases".
The universe isn't solved, and I'll take any odds on universe vs. humans anyone wants to offer.