Well, XRP is still battling against them and their value has not depreciated that much. As long as there are supporters, they will surely keep on living. But the effect that it will bring to the market though should not be ignored.
BNB, I always think this coin is one of the strongest there is next to Bitcoin and Ethereum so I highly doubt that whoever in the government is trying to topple it will be successful. We also know CZ will fight this no matter what.
There had been a big movement and I think those are the investors who expected the price to go down so they liquidate their investments. But they will be back, that I am sure. It's not like BNB is a trash coin that will just be forgotten after a sell-off, maybe they just want their funds secured or make money out of this movement until everything is cleared again. It's a good strategy for those who are storing a lot of the said coin but when they will come back is another question, perhaps when we see some light at the end of the tunnel or before this issue is resolved. SEC is good at shaking the crypto market, that's all they can do if they get bored.