Crypto - to me, it is a "lock the float" type pump. However, instead of a shady company eventually printing a pile of shares and dumping them on the public, there actually is a limited amount of supply of cryptocurrency. Furthermore, crypto represents a way for criminals to move money around - providing a further key purpose.
As a consequence, I have no idea where this ends. The market capitalization of the cryptocurrencies may reach a point where it becomes a systemic risk, thus causing the government to intervene. Sadly, I would not be surprised if it is too late at that point...