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.
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.
I'm in the same boat. Gave Nyxt a good try (as an ardent Emacs user), but I came to the same conclusion that it felt unnatural. Maybe I'll give it another go. Another big downside was the lack of extensions like uBlock Origin, Dark Reader, SponsorBlock, etc.