Only members that hadn't been seen online in 30+ days could be marked as Ex-Members. At least that way if they hadn't been logging on it's highly possible they were kicked from the guild. If they log on after 30 days and are actually still in the guild, WowCensus will mark them as so and whoever is misusing the site would have to wait another 30 days to do so basically making it pointless for them to even try.
Reason I ask is I've got people stuck in my guild on WowCensus since it was founded who are level 2 and level 7 or even no longer exist, however since they're obviously not logging on anymore, WowCensus isn't picking up that they are no longer members
