I find speaking tiresome, somehow, and if I had to talk all the time to my computer with text input being a fidgety "accessibility" option, I'd retire to a monastery and just become a monk.
Agree with the need for different buttons for different voice contexts though.
Though I think it will become a dedicated AI key on some keyboards.. How about the Right Alt/Option on MacBooks? Does anybody use that? It could be the "AI Anywhere" input key, optionally defaulting to voice, and while F5 could continue to serve as a literal dictation key..