I'm a fan of Google Assistant's usefulness and I generally agree with this. The Assistant craze seems more justified when you consider that companies like Google and Amazon are using it as a way to build datasets. It's a strategic reserve of data to build other things from (i.e. Google Duplex) and it doesn't matter at their scale if there isn't a vision yet, if a competitor is stockpiling transcribable voice data, they need to keep up.