The blogpost about the compiler is AI written, the README file in the Github repo is AI written, all the documentation is AI written, the reverse engineering analysis of Borland Turbo C++ is AI written, all the comments in the code are AI written, and every single commit in the repo was done by Claude. I don't think it's reasonable to say that the author took any serious interest in the code. I suppose they might have glanced over it before telling Claude to commit, but you don't get much out of that vs. writing a toy compiler yourself.