Bitcoin fell $1500 in a matter of hours, from 9k to 7.5k, once more proving the market is manipulated by few actors, and adoption will be hard due to it.
If we have another correction like that, it will just prove, one more time, the need to control the exchanges.
It proves the market lacks liquidity, that's about it. Bitcoin has been dumping (and recovering) like this for a decade now. Adoption keeps growing and growing in spite of it. What makes you think otherwise?