I like their approach. Indexes get diluted with overpriced trash like AOL, Yahoo, etc. and extended market indices pick up all kinds of scammy crapola.
Butt indexes are generally the way to go for most people and I use them also for portions of my financial assets, butt indexes have severe prollems if everybuddy uses them.
Because index funds are passive investors and cannot exert influence on management or the BOD.