Nice! Another tantalizing rabbit hole.

I go full in on ed sporadically. It requires a bit of a brain rewire, but tye UX is closer to pencil and paper, which is hard to beat for encouraging deeper thought, IMHO.

Also, check out edbrowse for a line-oriented browser:

https://en.wikipedia.org/wiki/Edbrowse

It's developed by a blind coder and has a nice core following.