It clearly does make a difference as to why he thought his experience was relevant to the job (i.e. what we were discussing before), and I think you agree with that hence your somewhat "selective" omission when you posted the quote.
I wasn't making a statement about whether his experience was relevant to the job. I don't know the author and don't automatically doubt his knowledge. I was simply sharing the opinion that being the author of that UI library alone does not fast-track someone for the "Software Engineer working on Claude Code" position at Anthropic.