I guess Helix is made to have appeal for Vim users. At the same time, times change and usually people expect less step learning curve (including myself!).
I would really appreciate visible-by-default hints, alike in Linear.app. Then, learning shortcuts becomes organic, rather one need to keep tutorial open, or have a cheatsheet of some sorts.
For what it's worth, this is actually one of the strong-points of helix. Many of the key-bindings display an unobtrusive list of follow-up actions that close without any lag if you already know what you're looking for. It's worth trying specifically because of how much effort has gone into being easier to pick up and get started with than something like vanilla vim.