Having a voice narrate one thing at a time to you does not have the same informational bandwidth as written content, labeled buttons, etc on a page/screen. Not even close.

Video has far less information density than a blog post. Heck 2 hour long podcasts have an information density of damn near zero. Yet those are the dominate form of online content consumption now.

I agree for productivity use cases it isn't suitable, but that is only important for information workers, which are not the largest segment of society. The fact is, Gen Z and Alpha are already having issues using the high information density desktop paradigm, and technology like this will only work to further erode the needed capabilities of the average citizen. Doesn't bode well for democracy and all that.