As the previous speaker confirmed, uninstalling the pre-installed /e/ apps without root is possible, but the applications aren’t really completely uninstalled from the device, but primarily only for the current user (user 0 is the default / main user of the phone):
adb shell command: pm uninstall -k --user 0 <system_app_name>
On different channels I’ve also read that, among other things, with LineageOS, once uninstalled apps are available again after an OTA. I couldn’t detect this with /e/ OS ROMs so far.
The uninstalled foundation.e.weather including lineageos.openweathermapprovider, lineageos.weather.provider and lineageos.weather.provider wasn’t renewed even after three OTA updates and is therefore still not usable.
If uninstalling the pre-installed /e/ applications is advantageous in any case, I’ll leave uncommented. In fact, uninstalling isn’t worthwhile if you primarily want to save disk space.
There’s also always dangers that the whole system could become unstable when uninstalling system maps.
If you just don’t want to use the apps pre-installed in /e/, and you don’t want to see the icons on the screen, you can disable all apps so that the icons are no longer visible on the home screen or subsequent display screen.
The advantage is: the whole system isn’t affected, the deactivated apps cannot be used and - the deactivated apps can be reactivated if necessary. The official OTA updates work as it should.
This 2 screenshots show a completely disabled Apps e-0.9-n(ougat) Samsung Galaxy Note 3 LTE “hlte”.