Prove me wrong. I'm a lore expert on Destiny, so odds are I can refute any argument you provide that favors Destiny. Vegeta and Goku would beat the entire Destiny universe in a fight.
Lets also assume they know the mechanics for the VoG and Crota's End.
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Or or or, the vex write them out of time because they Cannot open the door to the vault of glass, so the be. Master time and erase them from it