Kakoune is OK, but:
Some details of editing are too optimized for counting keystrokes in vim golf, less for thinking-free editing experience.
Configuring and extending text editor with shell scripts is ridiculous.
It's in C++. I want to be able to debug and submit changes to my most used dev tool and I don't want to be touching C++.
Having said that, I still miss the visual-mode-first experience of Kakoune (most moves in Kakoune change/modify selection, while Vim/Helix have visual mode instead).
Otherwise I think Helix already leaped over Kakoune in terms of functionality and polish, because it's just easier to contribute to (in Rust).
BTW. The difference between Vim and Kakoune/Helix is not that big. For basic Vim modes in shells and other tools, I don't really notice it. `hjkl` works all the same.