Perhaps "ensure" was inappropriate choice of words. We agree that "courts and judicial review exist to protect . . . . against "tyranny of the majority". However, courts also exist to honor the constitution, which means that sometimes the court should overturn legislation that represented the will of the people.
The article's suggesting that the court not stand in the way of the people's wills on these issues misses 2 points (a) it is not at all clear that there is as yet a common "will of the people" as regards climate change, universal healthcare, etc. and (b) "will-of-the-people" legislation may have unconstitutional features that warrant court overturning.