Pluton first debuted in the Xbox One. It's possibly the first home console that went it's entire lifespan without being hacked. That should tell you everything about the threat we are facing.

That may be true, though the problem with releasing such a high profile exploit is that it's patched quickly. So IMO anyone with access to hardware / talent required to crack the xbox is probably sitting on that knowledge and extracting as much value as possible from it, instead of taking it public.