I see what you mean now, I agree with you on that part. I thought you were talking about vault uses in general and not tied to the build you linked precisely, so my b.Uh well first of all, it's not really false because what I said was that it doesn't seem to use vault offensively as an attack taking into account the crossbow set, since that crossbow set changes the resource vault uses and makes it deal a lot of damage, so spamming it constantly actually doesn't cause you to run out of resources at all. I didn't say it had no other uses, just that I didn't see any in the demonhunter combat cs file. And that the demonhunter combat file doesn't have any checks in place for the Danetta crossbow set.
Second of all the build I linked is a modification of the UE fire build made by the same person to be better for clearing bounties quickly. He goes over why it's better then his T10 rift build for bounties in the video. The Danetta set bonus allows you to spam vault constantly through the bounty getting to the bounty location in a fraction of the time it would take otherwise (as well as the insane movement speed you end up with from the rest of the build)
Edit: On a side note, you seem defensive for some reason, like you think my question was angry or something because the build isn't supported. It was a mere question about whether it could be added and it had no underlying tones. Be sure to avoid assuming tone over text on the internet. It can cause misunderstandings if you take things the wrong way.
Now, I know philos kinda personally and I'm sure aware of all his guides and and what not, the reason I linked you specifically that build over the bounty one is due to how trinity currently handles movement. In reality it obviously is a faster build for that matter, but that will cause backtracking with trinity, since there are several nav issues with it, that are just recently began working on.
I'm in no way defensive or angry or anything, I even smiled at you, bbygurl, cause I assumed that may cause some reaction

At the current state with my settings it speedfarms in way faster speeds than I ever will, cause I get distracted a shit ton during manual play.
I've also tweaked my avoidance to the point it clears gr70s in mere 6-9min and clear 74+ but there's no efficiency in those clears as of yet.
Cheers