This is so disingenuous. You literally clipped the full sentence that changes the context significantly.

> "Once I’ve proven to myself that rendering was feasible, I used Claude to create an approximate version of the game loop in JavaScript based on the original DOOM source, which to me is the least interesting part of the project"

This post is about whether you can render Doom in CSS not whether Claude can replicate Doom gameplay. I doubt the author even bothered to give the game loop much QA.