For my part, in emacs I would often try ctrl-x-s to save, but miss the x. When I repeat the attempt, emacs register the complete but unknown key sequence ctrl-s-x followed by the start of a new key sequence with ctrl-s. I consider this similarly stateful because the behavior of "ctrl-s" changes entirely depending on what keystroke (if any) preceded it.
I did remap my heaviest hitters a long time ago to single strokes, though. Most notably, start macro, end macro, and replay macro all got coveted non-modal shortcuts.
I really like the composable shorthand of vim's command set though, even if the only one I have in muscle memory is <esc>:wq
To be fair, for most values of "every other editor out there," they came after vi (if not after vim), so it's not like vi was discarding existing wisdom.
I just tried out helix and I'm really liking the features like its single insert mode. Still taking some getting used to, since it's selection-first, not command-first, so `dd` just deletes two chars and not the line. And shift-V doesn't select lines... grr.