I think this is a much better use-case for this kind of idea. I especially like that even if I shrink down my browser, I can still re-show the content that got

I think this is a much better use-case for this kind of idea. I especially like that even if I shrink down my browser, I can still re-show the content that got hidden using the dropdown at top-right. Maybe people's concerns about not seeing the full content could be alleviated by a similar solution for re-showing the text that got hidden in the OP's example?