If Helix were completely different in this regard, like Emacs is, I could handle--and I know because I use both vim and Emacs regularly pretty fluently. But Helix is way too close to the vim keybindings to discern it from a memory muscle perspective. I use vim keybindings everywhere else (zsh, all readline-based apps via a setting in ~/.inputrc, VSCode), so getting used to slight differences in just one editor is extremely hard because I can't just drop all other apps.
I recently tried this: https://github.com/LGUG2Z/helix-vim which attempts to provide vim mappings to Helix. It's funny how the description in the page describes my progression almost 100%. And while it makes things slightly better, it's still not accurate enough to make this a non-issue.