I don't know who first mentioned Yuuzhan Vong possibly being mutated humans... I don't think that is actually true.
What I remember of the lore is that they are a human-like species that evolved naturally on a Zonama-Sekot-like world (i.e.: a living, sentient world) on another galaxy.
Their galaxy was eventually gripped in a war between two races of synthetics (there are hints that survivors of both races are around in the SW galaxy to the present, by the way) and their world took a terrible beating, and evolved biological weapons to defend itself.
The Vong apparently used those biological weapons not only to destroy those two races, but to then wage war on each other and eventually wreck whatever was left of their galaxy. The millenia-long conflict resulted in their turning into the blood-thirsty culture of zealots that eventually migrated to the SW galaxy.
As to the sidenote on the Thrawn trilogy... It really is the best SW fiction there is. Beats the movies, beats the games, beats everything.
What I remember of the lore is that they are a human-like species that evolved naturally on a Zonama-Sekot-like world (i.e.: a living, sentient world) on another galaxy.
Their galaxy was eventually gripped in a war between two races of synthetics (there are hints that survivors of both races are around in the SW galaxy to the present, by the way) and their world took a terrible beating, and evolved biological weapons to defend itself.
The Vong apparently used those biological weapons not only to destroy those two races, but to then wage war on each other and eventually wreck whatever was left of their galaxy. The millenia-long conflict resulted in their turning into the blood-thirsty culture of zealots that eventually migrated to the SW galaxy.
As to the sidenote on the Thrawn trilogy... It really is the best SW fiction there is. Beats the movies, beats the games, beats everything.