I mean, it kind of is. But I'd say the framing is about general air pollution, and they happen to use NOx levels as proxy indicator. So from that perspective, I think it is important to note that there are other types of pollution that go up with electric cars.
Ok, but tire pollution is still a problem:
https://grist.org/transportation/electric-vehicles-are-a-cli...
https://caltrout.org/news/did-you-know-your-cars-tires-could...
I mean, it kind of is. But I'd say the framing is about general air pollution, and they happen to use NOx levels as proxy indicator. So from that perspective, I think it is important to note that there are other types of pollution that go up with electric cars.