Back when I used a iPhone for work, I remember having Safari, Apple Music, Apple Rock Band, Apple Podcasts, Apple News and a lot of built-in apps being un-uninstallable and unremovable from my home screen.
Safari was the most egregious, since all other browsers had to use it as a backend.
In current iOS, all apps can be deleted except seven: Settings, Phone, Messages, Camera, Photos, Safari and App Store. All apps can be removed from the home screen.
Safari was the most egregious, since all other browsers had to use it as a backend.