Hm, I feel like I have roughly the exact same functionality with zsh and some various plugins, including the meta editing experience shown in your demo video ($EDITOR) via Kitty and/or WezTerm.
The other value add for alternative shells like my own is better support in the language for handling structured data (is not treat everything as a dumb byte stream).
Ultimately though, productivity is all about familiarity and if you’re also super efficient in zsh then I’m not going to try and convince you that some shiny new tool is better.