The first thing I do on an Android is skip the Google Account screen (bypassing the Play Store), open the pre-installed Chrome browser to install F-Droid, and then uninstall/disable Chrome. You can then install any other browser from F-Droid, or through Aurora Store through F-Droid, without any login credentials for any service.
Can you do that on an iPhone or iPad?
Can you install any app without having an Apple Account?
Can you uninstall Safari and replace it with any other browser? (For those unaware, Chrome and Firefox on iOS in the App Store are simply skins for Safari, having the exact same rendering bugs and issues as Safari; so, there's actually no way to install any other browser besides Safari on iOS.)