I DMed the person in question who did it today, I heard it yesterday but don't know who did it. If it continues past a notice to "hey maybe don't" then I would report. But imo it's a lot better to just say "Hey that's bannable" then to just get people banned. A simple quip once is one thing, constantly doing it with intent to troll is another
Which is why they should join S2 with the rest of their groups or friends...
I very much understand and agree that in a perfect world C1/C2 would have the same hive. But as we have seen in the past with S1/S2 Chernarus ca. 2017/2018 the loot economy gets fucked. In a perfect world, actually, we'd just have 200 slots. But of course that doesn't work. S1/S2 had a shit economy with ghosting being a real problem too. Even if people weren't going onto S2 to ghost into bases, if somebody on S1 had, say, the airfield locked down under their control players would simply go get their loot on S2. This way, S2 will actually be used for RP over loot runs.
This is not a perfect solution, but this is the best solution with the current systems we have in place.