I was about to purchase the 100GB plan, choosing them over Dropbox. But I don't know anymore. If they are concerned about people abusing unlimited backup, why a

I was about to purchase the 100GB plan, choosing them over Dropbox. But I don't know anymore. If they are concerned about people abusing unlimited backup, why are they reducing paid tier storage? How does that make sense? Were 100GB users storing 200GB somehow?