going off of videos on Major Grin's channel, of course. .. And I'm just... ".... Wut. This is dumb."
The only way I can think of the borg having it and not using it to start breakouts of assimilation across inhabited worlds throughout the galaxy.... is if maybe the borg collective had been given a "dumb-down" virus. (A Fire of Devotion by Zeus Parker uses this to explain the VillainDecay that the Borg go through despite ever increasingly shown capabilities, in that its a virus left behind by a TNG/Doctor Who comic crossover story, though warning, that story is also a ship fic of Seven and Samantha Wildman. only story with that pairing that I can see, but still.)