I wonder if this has anything to do with their decision? ===>
https://www.coindesk.com/markets/2022/06/12/binance-ceo-changpeng-zhao-questions-sec-investigation-into-bnb/ (They are investigating if the BNB token constitutes an unregistered security)
They are also under investigation by the U.S. Justice Department, the Commodity Futures Trading Commission (CFTC) and the Internal Revenue Service.
So I do not know if they are trying to pull an exit scam (pump) or if it was a legitimate problem. (I see that BTC withdrawals were enabled again, so it should not be a problem anymore)
