The posted extension is about using vim key bindings to navigate links and other useful common commands. Firenvim is about embedding an nvim instance in an text input field. Apples and oranges.
Worth noting glacambre (the Firenvim creator) is one of the primary Tridactyl contributors. And the two integrate too, IIRC.
I have been using tridactyl for the better part of this year. It is amazingly powerful, very fast for navegating with the keyboard. I miss the keybindings when I’m in other computers/browser
I'm not sure I understand the point of this -but rock on, you crazy VIMmers!
Being able to navigate links easily without touching a mouse is the game changer for me
I am disappointed to see no jokes asking how to exit.