Bloatware is annoying, but it isn’t the waste of space that you probably think it is. Having an app pre-installed does not eat into your available storage and uninstalling it will not free up space, even if you use a root-based method.
A device’s storage is partitioned into several sections. These include a data partition, the bit where all your stuff goes, and a system partition, where the OS is. Pre-installed apps go into the system partition. Uninstalling an app from here does free space in the system partition, but that space will not become available for anything else, so it’s a moot point really.
Incidentally, it’s the same with anything else that is pre-installed: ringtones, wallpapers, sample movies and so on. Sometimes these apps can be uninstalled, such as through the Play store by going to Settings>Apps and locating it there. If not, it can almost certainly be disabled in the same place.
Disabling an app uninstalls any updates that have been made, deletes all the data and settings stored in it too, removes it from the app drawer and prevents it from using any system resources, such as RAM or processor power. It is no less effective than uninstalling.