While I agree that this will be great for security, with changes like this I always wonder: what happens when we idiot-proof and hide implementation details of almost all consumer products? How does the next generation of hackers pop a path into a URL and learn about path traversal attacks, or code into query params and learn about XSS when we've hidden all that away from them? There's some value to that, too.
For me, that was exactly how I got interested in software development, first learnt about application security attacks, and even some scripting languages. I'm not sure any of that would've happened as well, or at all if my first device was a locked-down iPad (which it frequently is, for kids these days.)
Maybe that's the regular path of any technology. At first most of the community is small and technical so you don't need (and don't have the means anyway) to idiotproof. Then it grows and eventually there are more casual users than technical ones. Since the technology is more stable you have more ressources that you can dedicate to figuring out how your casual users use the technology. And since they have no interest in understanding how it works, you idiotproof.
The beauty of it is that it regulates the number of potential technical users. At first, your technology needs a lot of technical users, and since it's not idiotproofed yet, and users are exposed to low level details, you attract a lot of them. But then, low level details are progressively hidden, and only the users that have a strong interest will become technical. Essentially filtering out the users that don't have a strong enough interest to dive deeper than what they're exposed to.
Maybe the internet doesn't need as much technical users as before. So yes, there will be less kids getting interested in its technical side, but that's okay because it doesn't need them.
For me, that was exactly how I got interested in software development, first learnt about application security attacks, and even some scripting languages. I'm not sure any of that would've happened as well, or at all if my first device was a locked-down iPad (which it frequently is, for kids these days.)