"Blast" is a strong term. The way I see it, everyone knows that Bitcoin is being used/have been used for drug trade, and he simply called that out. I disagree with him saying that Bitcoin is directly responsible for the deaths though. I mean, how many people could have used Windows to transfer Bitcoins for drugs? Does that mean Windows, and by extension, Microsoft, is also responsible? By the same logic, fiat is directly responsible for killing people too, just in a less efficient manner, in his own words.

It doesn't look like he knows much about crypto, and was just sounding off his opinions.