Mordremoth does not posses the soundless.
Ventari’s tablet was just a stone with words chiseled in. It didn’t have any magical properties from what we can tell. If anything, the Pale Tree modeled itself off of Ronan and Ventari’s influence and ideals and not just a piece of refined rock. The tablet is simply the only thing we’re told of that the Pale Tree has to remember them.
They do not stay calm. They go in an all out frenzy when they sence Mordremoth.
I think you’re confusing yourself a little here. The similarities between Aerin and Soundless stop at their disconnect from the Pale Tree, the Soundless practically meditate to hone their consciousness; to them everyday is a risk of falling back in line. There isn’t much to prove the Soundless are anyway more aggressive than the Nightmare Court – it’s a lifestyle that these Sylvari have to continuously choose. A tug of war.
Now you could make the argument that the Nightmare Court was an offshoot of the soundless, and only through this kind of disconnect was Faolain managed to come up with the idea to create a Tree of her own that emphasized everything the NC stood for.
My point is, Soundless are not inherently violent. They might be potential targets due to the lack of a block that acts as a way to prevent Mord’s influence but they themselves aren’t insane. Something happened to Aerin and I don’t think it was as simple as losing contact with the Pale Tree.
Could we have Soundless enemies? Certainly but I don’t think they themselves are an aggressive culture of Sylvari.
Lastly, the idea that Sylvari are an anti-body… I’m not seeing it. It’s more asinine than the theory that the seed that births the Trees are connected to Mord and suggesting the Pale Tree is some form of lineage/champion. I’m actually more comfortable with the idea that Ronan and Ventari played a vital role with the power of suggestion to influence the Pale Tree’s ideas than to say that the Sylvari are are apart of Tyria’s immune system…. The EDs are suggested to be Tyria’s immune system: they rise, they destroy, go back to sleep, and after everything is demolished – it eventually goes back. Almost like controlled burns. They don’t consume the essence of magic like it was believed, they re-purpose it and through the lands left in devastation, new life sprouts up.
IE: Mt. St. Helens
If anything, the Soundless in Caledon forest are more peaceful than normal Sylvari.