Android - anyone? Android is linux, it's init is simple and the user experience obviously successful. There is a ton here for other distros to learn and improve on.
That's... one point of view. Another is that Android is very successful at content consumption while falling short at more complex workflows, possessing a remarkably fragmented ecosystem, failing to deliver security updates to most of its users in a reasonable timeframe if at all, and possessing little to no flexibility at the lower layers (ex. supporting BTRFS or ZFS).
No shit, it's a telephone OS. I'm pretty sure 'complex workflows' weren't one of the design goals for Android - nearly everyone has devices much more suited to that task.