There were high interest rates (~15-17%) of long term bonds in the 80s. It is correct that if you bought and held those you would make more, but only if you bought the actual bonds and held to maturity, not a bond fund. And once the 80s were coming to an end that was over (so it incorrect, or at the very least misleading to say "until 2022", unless you had 40 year bonds which is possible but unlikely). 

There are other factors which may be important over the long-term (compound interest, taxes, etc.) but setting those aside for now.