Concept videos are ill-founded in general. Indeed, I'd say it's better to have a vague, handwaving long-term goal than a crisp, sharply focused, highly detailed concept like these videos. The basic fallacy at play is the idea that it's possible to predict the future so far in advance. In reality this is only possible if your products are boring and mundane. When you make products that transform people's lives and the way the world works then it becomes impossible to predict how people will use them and how society, industry, and the economy will change as a consequence. That's true even from generation to generation of a device or piece of software, making it utterly useless to try to predict anything several generations ahead.

Worse yet, concept videos make it all too easy to fall into the trap of working to make a product that looks cool in a demo but in reality is either hugely impractical to make or use or simply not very useful. For example, you could make a demo video of people commuting to and from work via rocket powered skateboard. And it would look awesome, and after watching the video everyone would want to commute to work via rocket powered skateboard. But in reality it's not practical, and possibly not even as fun as it may seem (after the first 100 times the novelty would wear off, and then you're just riding a death trap and getting rained on and stuck in rocket-powered-skateboard traffic ... ok, it still sounds awesome, nevertheless...).

When you skip so many intermediate steps you can generate a false sense of what's possible, or even mislead yourself on what you're working on. Eventually smartphones are going to have no bezel and be super thin, so what? That's cool, but what does it have to do with what you are doing in the mean time to make smartphones better? It's easy to make a demo about voice control but the hard part is making it work in the here and now, how do you do that?