Yeesh, until I saw your comment I thought this was Fabien. I'm sure it's not intentional but this goes beyond "homage" and into "deceptive". The replies to this claiming to not see what the issue is are inexplicable to me.
The work on the book itself looks fantastic, so it's a shame about the site design.
It's often helpful not to immediately assume bad faith without further enquiry. It appears that Fabien had reviewed the book beforehand and he has reposted John Carmack's tweet[1] linking the book.
[1] https://x.com/ID_AA_Carmack/status/2066577536339923091