He's a legit and respected guy, and he was right about the crash. What he said, though, is that Bitcoin will go down at least at the beginning. So this seems to mean that even he has a hope that it's not the ultimate crash or anything that will stay for a long while. Bitcoin can still recover, and I think it's been doing alright since the say of the crash, to be honest. The price dropped drastically, but now it's been pretty stable over $5k which is quite strong of Bitcoin.
However, when I look at the recent interview he gave, he believes that the economic crisis is close. He says that Bitcoin might go down along with everything else and that in any case, it's not ready to support a big number of people yet (here's the interview)...