By my reckoning, this approach is probably ten years ahead of its time. I simply cannot imagine that the tech is there right now to make this nearly as seamless as it will need to be to actually supplant the UI paradigms we have today, and it's going to take billions invested by the duopoly to get to that point.
But I really do think this is at least a fuzzy picture of where we're headed. Your iPhone in 2034 won't look like this, but you'll likely be able to trace some things back to it. There are a lot of pieces missing that we barely even know are missing yet, but it's incredibly exciting to see a startup try to jumpstart a step change like this.