but can Bitcoin actually crash?
It can.
But what makes you think that it can't? Bitcoin is still a speculative asset and it can crash for every crashing speculation by the majority or any popular guy in the community. However, bitcoin being that type of asset is stronger today because we've got the stronger investors too, the institutions.
It might crash anytime but there are always those investors who are willing to buy those bitcoins that will have the discount if it happens.