Unlike the author, I'm an LLM optimist; but this take doesn't make sense to me. The thing you show cannot be "hey look at this LLM-based workflow, that's so much better than last year".
Where is the big browser, operating system, or other piece of work that has been able to quickly compete with the existing entries in the market due to LLMs?
The only one that I can think of off the top of my head is the rewrite of Bun in Rust. I think the fact that Claude Code runs on millions of devices on top of that rewrite is the sort of impressive demonstration that would prove that LLMs have lasting, systemic effects -- but it is telling that the only one I can think of was made by the extremely well funded lab that also happens to build the LLM.