I also tried Nyxt, but I never stuck with it. I believe there are different UI contexts depending on the goal. For example, browsing the web is a different task and experience than editing text. That's why it comes naturally to me to use a mouse- and keyboard-driven application, Firefox in my case, for browsing and Emacs for anything text-related.
In other words, using the purely text-driven Emacs interface to browse multimedia web pages does not feel natural to me.