Dude if he invested in Bitcoin it would cause a massive rally, he could easily make money from this shallow market. He has motives not to, but suggesting he has lost his investment mojo is silly.
Lets imagine Bitcoin became massive, what do you think for one thing that would mean for his dollar denominated stocks?
And he even might have a point that Bitcoin is more of a currency than a store of value. Not because it doesn't store value over the long term but that its volatile. In a perfect world I would use Bitcoin as a transport medium and precious metals as backing and store of value.