E integrates an own cloud service deep into its Android distro.
Unlike even apple, it dosent have any excryption, anonymisation, or even a fucking page saying when they sent what data to authorities.
And since they have this partnership, they have an incentive (Dont know if financial or not) to hinder other, way better backup services like Calyxˋes local, encrypted and honestly way easier to use backup tool.
Unrelated, but Their Installer is also dogshit.