The book he has coming out this year The Changing World Order: Why Nations Succeed and Fail certainly seems to touch on some similar themes from the brief description I found online.
Yes, it seems he's betting against the Western financial growth and stability. I wonder if he thinks the days of the dollar's reserve currency status are numbered.
It is not that simple. Right now interest rates are extremely low, so what you said is likely to be the case. On the other hand, as the economy improves credit risk will decline, and lower credit risk can drive bond yields lower (this is exactly what happens in the high yield market), which is more or less what happened for three decades beginning in the 1980s.
It is way too early to get out of dollars. When the dollar inevitably spikes, these emerging market funds are all going to suffer. If you were to sit on cash and wait to buy emerging markets at a discount, you’d do better over 20 years than buying now.