In a nutshell, the keys that were released could sign packages to run homebrew, backup managers etc.
There is a higher level key (lv0) which once we have will be game over for Sony, this key was never released.
It is technically possible to get this key but the people with the skills to do it won't.
What we need is a hacker with the skills and the willingness but so far this individual is nowhere to be seen.
That's about it
Unless it's Carmen Electra calling for an emergency titty f**k I'm not here