I dunno. Voice is a SEVERELY limited bandwidth channel. It's slow, prone to numerous potential error conditions, and just plain tiring to use for extended periods.

Yes, there are certain *very limited* niches  where voice commands are handy (such as making a phone call while driving) but they are very limited.

Besides, since voice command for things like Alexa need server-level computing power guess where all your queries end up? That's right, in the hands of advertisers and (perhaps) hackers.

So, no. Generalized voice command systems ala Star Trek isn't really practical--or safe, given the privacy concerns.