So I've already said this in response to another comment, but I'll say it here too. I believe it to be an anomaly with the Vex, as this sort of thing is not at all normal, and given the condition of the Guardian and Ghost, was likely forced upon the Guardian rather than him making the choice. For this reason, I stand by what I said in the post.

Yeah my bad man. I'll read the post before replying. Sorry for wasting your time.

No, it's fine, I had to scroll quite a ways to find it again. I might make an edit at some point if people keep asking me about Golgoroth. EDIT: Whoops, wrong post. This is why I usually space my lore posts out more. I meant to say Vex arm, my bad.