In this particular case, the no apparent reason is certain person known to speculate with cryptocurrencies suddenly decided he'd go on to publicly bash the thing he pumped in the past "for no apparent reason". I mean, we couldall speculate the price was a bit high for his taste and wanted a discount, or maybe he really believes what he said.
That said, I agree that bitcoin price is kind of a bubble, and something that is pumped and dumped by people with a lot of money to the detriment of those who saw it as a miracle savings investment (usually people with little financial education) or those who truly believed in it (I think those became a small % of the users a long time ago).