The Blackstaff is a position created by, and recognized by the White Council, therefor it was deployed by a chain of command. Eb didn't create it himself.
Created =/= deployed.
Deployed means a decision was made to send him somewhere to perform a task. We have no indication that the Senior Council regularly does this, or that it can enforce such orders, or a refusal of those orders.
General Ross helped create the Hulk in a lot of continuities, but you'd never say he deploys the Hulk or is in the chain of command of the Hulk.
A world in which a single wizard can perform a Dark Hallow is a war zone.
By that logic, a world in which a single person can detonate a nuke is a war zone.
That's not what a war zone means.
A single wizard can unleash unimaginable devastation, so yes the entire planet is in fact a war zone where anything can happen and requires someone who can strike at such a threat.
War zone: a place in which a war is being fought.
That someone can do something does not mean a war is being fought. You're using terms to mean things they simply do not mean.
I think that is the most difficult thing I'm trying to convey here. In the Dresdenverse it doesn't require a country to unleash nukes. A single individual can unleash incredible devastation, on a global scale. That's why the Blackstaff exists, for those individuals or groups. I don't see anything that points to Eb abusing his power.
Regardless of the scale, a war zone is a place where war is being actively waged. It is not the excruciatingly vague definition you're trying to use so you can compare things between which there is really no apt comparison.
Who says the Blackstaff only reports to the White Council? Also, do you think Eb told Harry EVERYTHING about his job? Just because he can ignore the White Council doesn't mean he's not accountable to someone, or should I say something.
Who else would he be accountable to? It's a position on the White Council chosen by the Senior Council. There's literally nobody else he could be expected to answer to.
"The Blackstaff chooses the wizard" - Jim. Sounds like a Mantle to me.
The quote is, "Eb took up the Blackstaff in 1884-1885 somewhere in there. The Blackstaff chooses his successor." I.e.,
the wizard who has the title of Blackstaff chooses who wields it next, not that the staff itself somehow does.
According to Jim, it's just an object with special abilities, without any sentience of its own, and all it really does is shield Ebenezer from the effects of black magic.
Kind of contradicts your statement about a chain of command doesn't it?
Ebenezer uses Harry as an example of him ignoring the will of the council. A chain of command means nothing when the person being "commanded" can just not follow it and faces no consequences. And Ebenezer didn't face any consequence for ignoring this order.
I wasn't talking about the Council ordering him to take out it's members, I was talking about if for example Eb got tired of Langtry and decided to kill him. Think the others would just stand by except it?
Obviously they're not going to be okay with their secret, illegal assassin being turned against them. That's kind of the point.
You think White Council members will just stand by and accept that there's someone out there authorized to execute them on the spot, without even the show trial? Remember the uproar and outrage in Summer Knight when it was suggested they do that to Harry?
So yes, the Senior Council would have a problem with their secret assassin assassinating them. Just like the regular members would have a problem with that secret assassin murdering them.
That's exactly why people would have a problem with the Blackstaff.