In no way does that article claim there is a backdoor. It claims CIA and others have heavily invested in finding 0day exploits to gain access to the iphone; this news item is about apple closing some of those.
I'm not engaged in international crime or fighting nation states, I just want cops to have to get a warrant and my lawyer to get a chance to argue with them in order to read my phone.
Don't fool yourself. That's not possible with the current iOS configuration and the link you provided doesn't dispute that. If anything, Apple has closed any potential backdoors that could have been exploited.