It's like there was a shift in goals after the author made the title. Maybe explaining the basics was so much fun, that the initial idea got lost... I also don't think knowing how a crt monitor works is instrumental for people who want to make software. The domain is cool, but it doesn't match the content. whatissoftware.com might be better.

when it is explained how pixel, gpu or llm work, I would at least expect some intro to Von-Neumann-Architecture.