No idea, maybe they want to limit access to their repositories to people who bought a device. Maybe the account system is already there for whenever paid apps are supported, in which case you would probably need to create an account anyway. Does it matter?

Out of those three only NoScript is needed, ABP is completely unnecessary and bloated (and even allows ads by default) and Ghostery is proprietary.


If you don't want to be tracked using a mobile phone, there is only one option: don't use one. Using a phone with open hardware is only a pseudo-option, as you can only not be tracked if you disable all connections, which would defeat the purpose of a phone, or you are your own service provider and also provide service to all your contacts and in fact to everyone all over the world. Not to mention the devices with open hardware are currently either old and not available anywhere, or vaporware.