Yeah this project totally completely baffled me. "Autocomplete for the Terminal". What?? Bash has had fully programmable auto-completion for over 20 years [1] -- and that's just one comparitively bare-bones shell, out of dozens that are all free forever and not spyware.

Watching their demo didn't help either. At most the behavior seems an incremental improvement over what Bash ships with in most distros, and it's not even clearly better than that (IMO worse, I prefer the trailing slash or color-coding that Bash uses to distinguish file/dir properties vs icons). Joke: Is the "perceived need" really just because macOS's default Bash distro has these features disabled?

[1] https://en.wikipedia.org/wiki/Bash_(Unix_shell)#cite_note-60