Totally agree. I too had the Covox voice recognizer on an SX-64 doing voice-controlled x10 (and other) home automation in the '80s. The amazing thing is that despite the fact that an RPi 4 has more power than a Cray had back then, modern voice recognition really isn't much better than it was then. (Although it was pretty speaker-dependent...)

I have a handful of Echo Dots and Shows in places I don't mind the security risk, and they are maddeningly incompetent at doing anything in the real world other than telling the weather and acting as a voice-controlled radio (their main use...)

It would be interesting to go back to the Covox approach and rebuild it for today's tech from the ground up (shouldn't need the hardware anymore...), as it worked surprisingly well on computers that had less resources than many (most?) of today's microcontrollers...