I only know Cramer from the fun and others meme is been the originator. But that statistics should be taken with caution. Being long equity since 2008 was not really a proof of creating a alpha ( aka adding superior return than the market). That's the long term low interest rates environment that incentivize W Buffet to make his famous 10 years long sp500 won't be beaten by any HF.

They was referencing this scene from Anchorman: https://youtu.be/IKiSPUc2Jck?t=37