Maybe we can partly blame Binance because of their support but if we talk about the exit scam plan, the exchange is out of that which means that the direct receciver of the complain must be the Luna developer and the team involve with this. It is for sure Biance isn't aware of this situation until they see a continuous decline that it caught the attention until such time the delist of this coin happen.

Maybe I miss something but never I heard from Binance tells holders to what they do with their coins inside. Maybe it wasn't frozen yet so they can still withdraw it and just hold.