Wordpress ships HTML and CSS, then JS when needed. They got it right.

What WordPress couldn’t do, in the way I wanted it to, was give me direct control over what shipped to the visitor.

In WordPress, fast is a project. In Astro, fast is the default.

The five killer features of Astro are:

• zero JasvaScript by default
• bring your own component framework
• the file-based router and content collections
• MDX for blog posts
• Astro gets out of the way and disappear

The author built the Astro theme "Astro rocket" to have 100 score on Lighthouse https://astro.build/themes/details/astro-rocket/