1. Fully unmanaged and automatic updates.
2. Online account: automatic e2e backups and restores. Can be a payed or a selfhosted service.
3. Does not require root account. Locked root account.
4. Flatpak and Android apps works out of the box

Call it Grandma Linux™ if you want. It needs to be a deploy and forget distro. I’m not recommending Linux right now unless they’re developers.