[sinaa]

You make a very good point on this.

As you say, a big win by text is that you can quickly skim it, ignore parts of it that you don't deem to be relevant, and essentially only use the working/short-term memory for the information you are interested the most in the context. Therefore, if the device responds back to you in voice, even if it's entirely a human-like experience, that's still inferior (at least in terms of speed) compared to the text-based experience.

Even for using voice as an input-only mechanism, it's still going to contain lots of redundant/useless information and verbosity.

Compare "OK google, what is the price of bitcoin today?" vs goolging "bitcoin price".