I'm dyslexic; em dashes are great. I struggle to follow where I am in text: once I was asked, "What the f@!# is your reading age?" Visually distinct elements help me follow text—e.g., em dashes, varying paragraph shapes, and accents on imported words like "naïve", "rôle", "café", or "ansätze".
Join the em dash reclamation project!! Who better to lead the charge than @astrokatie.com — I believe she is a human being — who was an established science author and communicator before the clankers existed!