A slight advantage to big servers is the increase in anonymity on the backend. Given the server admins can do what ever that want. An admin on small server would no doubt be looking into who and where their individual users are. Big severs are more likely to become more population based. Doesn’t really matter though I suppose.
Ding ding ding. It’s all about outsourcing accountability as much as possible. Always need a finger to point at if things go wrong.