You completely misunderstand the nature of the article.
It doesn't mean that people will lose their investment, US Treasury Bonds are the safest bet on the planet bar none, but what that article means is that as interest rates rise, bond values will decline. In addition interest rates are very low and likely to remain that way for some time.
US10 Year note rates have spiked up recently which means the Bonds are losing value.
You think they should buy gold? One look at a gold price chart should convince them to steer well clear.
