When someone is banned the guild loses 1/2 of the trophies that individual earned, so using Tarans you can see some long term members losing out.
Doesn’t help to see newer members where the trophy count wouldn’t go negative though.
PC/Mobile
Xbox
Playstation
I took similar screenshots before going to bed last night and some guilds got hit twice. And they have increased in numbers, so its not one instant banwave. Unless it only takes affect when someone logs in, not sure.