It feels like, if anything, Q rushed humanities introduction to the Borg. Picard’s all like “he did us a favor”, but considering all the following interactions (scooping up colonies, First Contact, etc) were a direct result I’m just not sure I buy that. It’s basically established that the reason for The Borg’s out-and-out invasion was they perceived humanity as a threat. Obviously, Humanity is no threat whatsoever so not sure how Q did anyone a favor here.