In their conclusion, from a decade ago, they suggest that in the future (i.e. now) with larger amounts of renewables curtailment will go up.
It's like people dying during heart operations. If the number of deaths go up because you are treating more people is that a good or a bad thing? If people come away with the idea that heart operations are too risky, when the science suggests we should be doing even more of them, because the vast, vast majority save lives is that good science communication?