Buying value stocks may be better than buying an index, but identifying value stocks is hard and time consuming. Wouldn't the average investor be better off buying index funds, since the average investor does not have the time, inclination, or training to find value stocks?
So if one was able to invest in low-volatility index funds, the article's author would theoretically be able to avoid the massive bubble swings while still potentially beating the market (albeit probably not by large margins).