Not the parent comment, but my personal use case is for rendering a selectable list. The server side would render a static list with fragment links (ex. `#item-10`) and include elements with corresponding IDs, and a `:target` css rule to unhide the element. This would hopefully be paired with lazy loading the include elements.

edit:

My goal is to avoid reloading the page for each selection and rendering all items eagerly. JS frameworks are the only ones that really allow this behavior.