His current blog talks about how he "used to write about boring finance stuff." He has run hedge funds and was the founder of stockpickr.com. He is a venture capital investor. He can speak finance but prefers not to because he feels strongly the deck is stacked against retail investors. I (mostly) disagree. Find his writing entertaining regardless.
Mostly disagree is a highly defensible stance. Yes, the world of personal finance is fraught with peril and hucksters, and the large institutions do have tools and information we don't. But, NO, there is no massive structural bias against the little guy - mostly just a lot of advertising trying to suck him into bad choices. And we have advantages they don't - massive flexibility for one, because we are our own shareholders (corporations of one, or five, as the case may be) and can enact radical strategic change in our lives at the drop of a hat. Good luck telling the board of a corporation that it's going to live on a small fraction of its revenue for the sake of decades-off returns.
This forum is full of living proof that you can self-educate and succeed at investing.
As I'm fond of saying WRT many of these claims... keep on saying it can't be done, and we'll be out there doing it.