Just a side comment -- bond yields are measured in %, and dividends in $.
Real SCs are always correct even in technical aspects. Bond yields should be compared with dividend yields. Investors who compare apples with oranges lose money. The sentence, however, correctly says that there are many of such people.
To correct, I propose the extention:
Many investors base their choice between bonds and stocks on comparing bond yields to the dividends available on common stocks--THIS IS WHY ONLY A HANDFUL OF THEM MAKE A BUCK.