__________________ "Vader's pulse and breathing were machine-regulated, so they could not quicken; but something in his chest became more electric around his meetings with the Emperor; he could not say how. A feeling of fullness, of power, of dark and demon mastery -- of secret lusts, unrestrained passion, wild submission -- all these things were in Vader's heart as he neared his Emperor. These things and more."
Registered: Dec 2018
Location: Everywhere and yet Nowhere
Because Vitidiot is a weakass Sith who relies on a dark side nexus to do something. Also, he needs an Iokath weapon to help him to drain his home planet.
Vitiate, or other Sith Lords cannot just drain The Force - they either need rituals or Force-imbued machines(like the Zildrog)
Only Nihilus harnessed that ability - and it was an affliction gained from Bao-Dur's Mass Shadow Generator.
Besides, Vitiate's attack on Ziost is nothing else but a perfected thought bomb(read the New Sith Wars comics or Darth Bane: Path of Destruction) He needs to feed on death and suffering in order to release such immense blast of Dark Side power.
__________________ RealistRacism: "Sheevites, much like the Banites, were meant to increase in power with each member. From Lightsnake to Gideon to Azronger, this was supposed to be the case. However, knowledge must've been lost in some kind of Gravid-like incident, as Az turned out to be a mid-tier debater with a sub-par track record, sh!itting all over Tempest's legacy. Sad."
I was gonna point this out. I'd also like to note that it was only partially successful as he still wasn't at full strength even after feeding off the death and suffering.
I think you are missing the point here, dear Legend.
There must be a reason why he was weakened, and that might be due to him spending a good amount of his Force strength to keep himself immortal in The Force.
There is no contradiction to what I have said.
__________________ RealistRacism: "Sheevites, much like the Banites, were meant to increase in power with each member. From Lightsnake to Gideon to Azronger, this was supposed to be the case. However, knowledge must've been lost in some kind of Gravid-like incident, as Az turned out to be a mid-tier debater with a sub-par track record, sh!itting all over Tempest's legacy. Sad."