This is so cool! I'm someone for whom emacs has steadily expanded its role in my computing life, but who will never adopt a text-based browser as a daily driver.
Looking forward to the stable 4.0 release when I'll be prepared to use Nyxt and hope it can replace Firefox / Chromium as much as possible for me.
In other words, using the purely text-driven Emacs interface to browse multimedia web pages does not feel natural to me.