Overly optimistic. Are you counting the extreme technological advance these guys have on the general population? What about their "secret" armies of millions of gene-edited, brainwashed, mind-controlled zombie super-soldiers? Their fully optical power and computation systems, meaning they can EMP the hell out of everything electrical and electronic worldwide and remain unaffected...

There are so many things to consider. And when you add it all up, mankind is royally screwed. Until the Sun has its recurring micro-nova. Then, the game of life resets for another 12,000 year long inning.