I've been thinking about this for a while.
Back when the NijiEN Discord leak yab happened, some Nijifans tried to justify it by saying "yeah I bet HoloEN shit on their competitors in private too, this is normal", my initial thought at that time was "i doubt". From what I've heard, the NijiEN Discord server (at least the one that got leaked) was a private server consisting of only livers, so there are no rules, they can say whatever they want. All Hololive Discord servers however, are "official" and probably consist of staffs/mangers and talents, so I wouldn't be surprised if they were all trained and instructed to not say anything that can cause potential yab in the worst case scenario of it being leaked.