I came to the same realization and started putting all the text for the "reading version" in the presenters notes part. The first slide says "If you're reading this on your own, press 'p' for presenter mode" or whatever.
Smart! I just wish PowerPoint had better support for content formatting in the notes. It’s really barebones and hard to edit—more like working with text in an Excel cell than a proper document. (Which kind of makes sense, from their perspective.)