Which is worse: the NSA having total control over all iPhones (citation? I obviously haven't been paying enough attention), or the NSA and all the (other) bad guys in the world having total control ...? Sure, they're both terrible, but I'd take the former over the latter.
> the Snowden leaks have shown that the NSA has total control over all iPhones
You mean: had total control over all the original iPhones that they could get physical access to. (back when jailbreaking was extremely simple and common)
From the slide on your very link: "The initial release of DROPOUTJEEP will focus on installing the implant via close access methods. A remote installation capability will be pursued in a future release."
Basically how it worked was they jailbroke your iPhone and installed spyware on it. Is it quite likely that today, 7 years later, they have a remote 0day to do the same? Absolutely. But there's no proof that "the NSA has total control over all iPhones".
Why should we even bother talking about bugs like this anymore? Pure distraction.