> Raw HTML/CSS/JS are out of distribution just like assembly (no one builds apps like this)

Plenty of people build apps with vanilla CSS and JS (and HTML is just HTML). It's a really nice way to work.

Here are a few links to get you started.

https://dev.37signals.com/modern-css-patterns-and-techniques...

https://simonwillison.net/2025/May/31/no-build/

https://bradfrost.com/blog/post/raw-dogging-websites/