Comment by zeroq

I partially agree.

The "separation of concerns" is often misunderstood, and historically people were treating html, css and js like they were completely separate beings, which is of course a recipe for disaster [0].

However, what I'd like to see is separation between logic and presentation. In React world people used to call them dumb and smart components. Then you can use stuff like storybook to gauge your layout before applying "business logic" to the application. On top of that you have an easy way to test your "smart" components.

[0] like that time when I saw an org that decided to be "cloud agnostic" and people started pushing their own databases and http servers to AWS. :)