That sludge sprayed by those probes is actually a liquid based network of nanobots called THE SLURRY.

Yuck, Now that you mention it I can like SEE it all moving around and forming like, connections and stuff...

Yes, THE SLURRY is self maintaining and self replicating. Members of the Cynex are effectively IMMORTAL as long as this system is utilized... undistrubed.

For example that "individual" we saw in the broadcast was an EKDESIS, a species that has been offically extinct for over a millennia.

So he's stayed alive all this time because of this slushy stuff? Why doesn't like... everyone in the Inverse use it then?

Well, it's speculated that at some point in history it WAS very widespread for medical use, with no noticable effects to the psyches of its hosts.

But for SOME reason, whether it was infected by malware or possessed by ghosts, it suddenly developed a really trashy personality... and a REALLY juvenile sense of humor.