I’m skeptical of rote simplicity. It’s good for the people making digital tools to simplify their job and make one tiny widget, but a swarm of tools that all do one tiny thing well is still a complex system for the user to manage.
The “one thing well” idea is great, but only for a small subset of tasks. The Google Chromebook (supposedly) does one thing well: runs the web. Yet not many people want that experience.
It’s one thing to make small apps for my iPhone that each do a particular task really well — while being a completely different thing to make an iPhone that only does one thing well. The simplicity in the iPhone is that every thing it does out of the box it does very well — without requiring extra things.
It can be quite tiring to check 45 different apps.