Do you think Bitcoin will crash one day?
Well if you see at fiat, they crash and recover, so why will Bitcoin be different? It's a currency after all. It will see its ups and downs but the main thing with bitcoin crashing will be, What will make it crash. A way better Altcoin, Quantum computers or a world war 3. The question you are asking has no one definite answer. You are allowed to believe whatever you like 
That should always be what people are trying to research on before they go screaming bitcoin will crash.
I think they should have enough sources of information that explain hypothesis assuming that it would be happening.
In my opinion, such scenarios happen because people think bitcoin will go down that is why many will sell not knowing they will be the reason why it will go down.
It is not a fact butbi think it contributes to any crash.