I would have been fine if they shifted to the studies or research or volunteer work ND people are doing. But they didn't do that. They just paid for an add on a political football.
The climate has been changing for hundreds of millions of years, and warming for the last 18,000 years. That is not a political issue, and never was. It is only the "we have to do something now, like give money to Democrat donors, or the children will die" that makes it a political issue.
But, if you are right, and ND is not trying to get people to take political actoin, why is ND buying an add to support a mere principle of science? Will they buy an add to support the round earth next?...and fail to mention that ND educates people about the round earth? Or heliocentrism? Or gravity? Obviously, they want the ad to lead to political action. And if they don't, then maybe they need to think about how effective the ad is.