I think that misses the subtly of how bond yields work, which is sort of inverted from normal products. Bond yields dropping means that demand is increasing, and the government therefore gets to promise a lower future return to attract buyers. Increasing bond yields, by contrast, indicate the demand is low, either because faith in the government is shaken, or people see more profit on other investments. So long term prices dropping while short term process are increasing essentially says people are boarding up the windows for an expected storm. Although, as is pointed out on the article, the governments of the world have never had balance sheets like the ones they have now, so who knows if past performance is an indicator of future results.