As someone who was a web developer since the mid-2000’s (and not more recently), an HTML first approach speaks to me. I am still of the belief that your contents should be in HTML and not pulled in via JavaScript.

The article is a bit self contradictory. It encourages specifying style and behavior inline and not using external styles and scripts but also discourages using a website build pipeline or dynamically generated HTML. So how can you maintain a consistent look and feel between pages? Copy and paste?