I had always assumed that it was the one hub that was destroyed though I agree it is likely that all 6 were. Seeing the network in use after Seven says that it has been ‘obliterated’ adds to this confusion, especially as this is shown after the destruction of the uni complex and hub. Destroying the network itself though would not amount to the destruction of the Borg. It would just leave the Collective scattered around the galaxy with each cube/ship having to rely on their own installed transwarp coils and other means, such as standard warp, for transport. I would imagine that the resources needed to rebuild transwarp hubs would be unimaginable in scale - they may take a very long time to rebuild, but I am sure that the Borg would try to do so.
If you look at what the word ‘obliterate’ actually means though, it does not always mean to totally destroy something.
Obliterate also means
“to remove all signs of something, either by destroying it or by covering it so that it cannot be seen.”. So it is possible that the transwarp conduit network is still in place on a transwarp level outside of normal space, but unusable as the hubs(s) have now been disconnected/destroyed, meaning that it has been obliterated from our galaxy ‘
covering it so that it cannot be seen’. There may be other ways of tapping into what is left of the transwarp network. Just imagine this entire network existing in two plains of existence, we have no idea how Borg transwarp hubs actually work - they are only labelled as transwarp as the speeds that they allow ships to travel ‘transcend’ warp drives. I doubt that the tech is the same as that installed on the USS Excelsior in the 2300’s. The Borg Transwarp hub could be like some form of ‘mycelial network’ in concept but in a different layer of subspace.
The hub VOY destroyed connected to all other quadrants and hubs in the galaxy.
And VOY initiated a
chain reaction from INSIDE the TW network... we only saw the one in the DQ obliterated as it would have costed more money to showcase ALL of them being destroyed.
So, 7 pretty much definitively said 'the TW network has been obliterated Captain'.
There are 6 TW hubs in the galaxy..
The entire plan hinged on Admiral Janeway infecting the queen with the pathogen so that this would disrupt her control over the manifolds inside the hub.
Also, we see the Borg transwarp network in Picard season 2 - Soji pilots the La Sirena to an abandoned Borg transwarp conduit at one point. The abandoned transwarp conduits were also used in Star Trek Discovery in the 32nd century from what I remember too, though it is possible that these may have been rebuilt.
This is speculation, the insinuation from Picard season 1 is that the Admonition cannot even be handled by the Borg upon knowing it. The Admonition is a pretty big deal…
But if you watch the clip that I have embedded below, and read the transcript
here, it is stated that the Borg *did* assimilate the neurolytic pathogen. Watch 2:40 in to this clip:
Assimilating the pathogen was the goal... but that doesn't mean the Borg ADAPTED to it.
It still ravaged through the collective, killed the Queen and destroyed the Unicomplex (to say the least).
The collective's voices were also heavily breaking apart from the pathogen ravaging through the Hive Mind... so yeah, the little pathogen did incur massive damage and crippled the Borg severely.
As for the Admonition... oh please... its an AI.
Yes, its been said to be a 'big deal' but how much more of big deal it is compared to the Borg or 8472?
Its also NOT speculation the Artifact was heavily damaged from the neurolithic pathogen... its heavily implied in VOY Endgame (based on what the pathogen did to the Borg), Picard and in Prodigy.
The Romulans were projecting their own fear of AI onto Admonision and making it out to be 'larger than life' probably.
You think a full functional collective that's partly AI to begin with wouldn't be able to cope with the Admonition signal?
Meh... sorry, but I don't buy it.
A damaged Artifact/cube encountering that kind of signal? Yes. Fully functional cube to all of the hive mind intact? Nope.