Debatable. The Resistance is evidently of sufficient importance that it merits discussion in a future history class about the Borg, some thirty years after the event.
JANEWAY: As they say in the Temporal Mechanics Department, there's no time like the present.
CADET: In the year 2377, you aided the Borg resistance movement known as Unimatrix Zero.
BARCLAY: Sounds like someone's been reading ahead.
JANEWAY: I thought you had a question, Cadet.
CADET: Yes, ma'am. When you informed the Queen that you were going to liberate thousands of her drones, could you describe the look on her face?
But beyond that we've got very little to go on.
Within in the non-canon EU novels, there's vast amounts of (often conflicting) info about the Borg Resistance with entire novels devoted to its antics.