The discord server is seemingly only moderated by one moderator; AKradian. The other mods are either never active, don't moderate or are selective in how and who they moderate. For example, Neospector is selective in who he punishes, and it seems like he bans people for disagreeing with him.
The only time some moderators are more active is when the CM is in the chat and something is going on.
Generally, the maplestory discord is easy going and free of problems, but letting rebooters raid the discord not just once, but twice shows how lacking in moderating the server is.