The person I interacted with couldn't even see a purpose for nomadic identity. Basically under Solid your identity is tied to a URL and if that URL stops responding, your identity (e.g. "you") no longer exist.
The terminology has been a point of contention in the tech community for nearly two decades and now it was just removed from one of the most popular programming languages in the world.
@renyuneyun 手机上也可以多窗口的，Telegram 调用 Custom tabs 以及微信小程序都是例子。