The danger is a whale can buy short futures. Then he sells all his bitcoin. The price crashes as other sellers exit, he covers his shorts and buy back all his btc. This is how markets are manipulated with futures. And it's about to happen with btc. Bitcoin has been free of wall street manipulation until now.
You have been warned!
Bitcoin has been free of wall street, too. On my knowledge that CME Group Inc. futures contracts introduction was a hoax
https://www.reuters.com/article/us-cme-bitcoin/cme-says-bitcoin-futures-coming-this-year-but-date-not-set-idUSKBN1DL1QPit's still somewhat far away.
The effect you described will likely happen during this "transition phase". You can totally prepare for that, riding these swings.
Maybe two or three times before things settle, since high volume market makers tend to "flatten" the charts.