What I wanted to say, was that helix should make an additional keymapping file that has nearly identical keys to vim. Repositories like gitui [0] do this, so vim users can just jump in guns-blazing. Granted, they have far less keybinds to cover.
The second link, "Migrating from vim", doesn't nearly cover all the differences between vim and helix. If there wasn't a keybinding file I could use, I would need a document that covers as many differences as possible between vim and helix. I found this document when trying to figure out a mapping in helix, and it didn't cover it. I can't remember what the mapping was though.
I really want to use helix - I want lsp and tree-sitter out of the box in the terminal. I hate managing a neovim config. But I also use tons of other machines, and vim is on all of them - I can't afford to unlearn that muscle-memory. I think you can make helix both it's own editor with it's own take on things, and capable of adapting to people who are heavily invested in the vim paradigm.