That is a solution I pondered as discussed here: Load multiple content files in a single template
where you need to set the layout to “empty”.
This feels like a hack and moreover it splits the content of the page into multiple files. If I reuse my testimonials for no page other than the homepage, why would it be separated?
What about the “intro” and “aside” content that appear in my example. They would need to be stored in separate files even though they relate only to my home page for instance?