Comment by Krssst
Plus there are many contexts where you don't want to use your voice (public transport, night time with other people sleeping, noisy areas where a mic won't pick up your voice...).
And there are people that unfortunately cannot speak.
Well, there are people that cannot see.
Fortunately, there are solutions.
I want to add that I think you are missing my argument here. Devices that allow you to speak without speaking shall soon be available to us [0].
The important aspect of my position is to think about the relevance of "applications" and "programs" in the age of AI, and, as an exaggeration of what is shown in that post, I was wondering if in the end, UI is not bound to disappear.
[0] https://www.media.mit.edu/projects/alterego/overview/