nvi had more direct lineage to true vi, Keith Bostic was in the Bill Joy headspace, but it kind-of got stuck. Vim diverged in ways which used to annoy me but I've come to accept.
I won't mention "the other editor family" here but it is interesting to see the things in that one, which I miss in this one (for me at least) which are principally the ability to cut-paste regions, and a set of things which became screen and tmux. Now there IS screen and tmux, that matters less.
Not having 2D region cut-paste is a small price to pay for the joys of a modal editor.