They seem to be happy to pull their info from here, nothing confirmed this more for me than when they used the link for La Vie En Rose and when it didnt match up with the link Game Detectives had online for their archive, I did some searching on ETARC and found the link was pulled from the thread for the puzzle here, and it was a version archived by none other than @sheralmyst .
Again this plays into their statement about not pulling from a cold database with single lines, but from memories. The lived experience cant be reduced to single lines of history and system seems to respond better to this version of events than a single persons summary of the whole.
The line about accessing historical_DB if they have to might imply that maybe sometimes they do OOC. Maybe as a jumping point to then search for terms on ETARC for a broader understanding of what went down on the TRACE.
I wonder are the old discord channels for Waking Titan also still there and searchable?
@YourBasicMaths I woke up just now and first thing I did while waiting for coffee to happen was check the forum thinking there wouldnt be much movement. Was shocked to see you had posted the fourth question and in my still waking brain for a moment I thought you gave the jig up and accidentally posted without logging in as Archie 
Then I saw the email. Makes perfect sense they’d give you the honour
nice to finally have NED DID DAD on the board. Wait until he finds out DAD DED.
I think he chose to reject your framing in that opening line 
“Excuse-moi Inspector Vector, I am not on trial here, I will answer how I like.”
The distinction of ETARC and Operators stood out to me too but Im wondering if it was just how it was phrased. Perhaps in the order of things he was asked to connect Tower with ETARC etc and then was asked to gather everyone he could as Operators, including keepers of the Trace.
Also was wondering about the Tower, I feel we had contact before it was fully established, but I couldn’t remember if that was just when we gained access and that tower was always there in some capacity since we entered the fray, and that us having access wasnt necessary for the communication on systems end, and us entering tower as primes serves a completely different purpose for System.
It does give us good insight as to why Ghost freaked out about losing access when Archie cut off all access and why they suddenly emailed you as system in their panic. Perhaps even without tower they can still email I guess. Which begs the question, what ability to commune with us does Tower give exactly? Is it just to completely monitor us here and elsewhere? Because they have yet to use Tower to communicate with us in any other capacity…
System, make an etarc account already you coward. And sign up for Discord and enter the hive of Wasps. Show us what the Tower can actually do re: communication 