Can prevent this by using:

object OnServerCommand(ConsoleSystem.Arg arg) // Credit: FauxAdmin
{
    if (arg == null || arg.cmd == null) return null;
    string command = arg.cmd.Name;
    string reason = arg.GetString(1).ToString();
    if (command.Equals("ban") || command.Equals("banid"))
    {
        if (reason.Equals("Cheat Detected!"))
        {
             var player = arg.GetPlayer(0);
             if (player != null && player.IPlayer.HasPermission(perm_use))
             {
                 //PrintWarning($"{Name} Ban Blocker stopped a ban of " + player.ToString() + " for " + reason);
                 return false;
             }
        }
     }
     return null;
}