I think your biggest takeaway should be that they person writing the blog post is extremely well-known versed in programming and has labored over code for hours, along with writing tests, debugging, etc. He knows what he would like because it's second nature. He was able to get the best from the LLM because his vision of what the code should look like helped craft a solid prompt.
Newer people into programming might not have as good of a time because they may skip actually learning something fundamentals and rely on LLMs as a crutch. Nothing wrong with that, I suppose, but there might be at some point when everything goes up in smoke and the LLM is out of answers.
My experience is opposite - I get the most value out of LLMs for topics that I have less expertise in. It’s become vastly easier up to speed in a new field because you can immediately answer basic questions, have the holes in your understanding pointed out, and be directed to the concepts you are missing.
Newer people into programming might not have as good of a time because they may skip actually learning something fundamentals and rely on LLMs as a crutch. Nothing wrong with that, I suppose, but there might be at some point when everything goes up in smoke and the LLM is out of answers.
No amount of italic font is going to change that.