Reading is one thing, but think about stuff like website generation, searching for information in massive datasets, real-time audio chats that don't sound like the AI misheard everything with a pause, and stuff like that.
Yeah, I think our desire for tokens/s and lower latency is likely insatiable. Same reason you have a terminal that can print out more than 300 words per minute. Life is way easier when you don't have to be super parsimonious with your output. You suggest a bug fix and regenerate the whole code snippet, or you spit out a webpage on demand and the user scrolls to the bottom immediately, etc.