I don't really care about how many minutes or kilometers I've traveled. I care more about the amount of exercise. I think I missed that part of the article.
Misleading or counterintuitive? I would have expected manual bikes to give more exercise, but the explanation -- that most people get more exercise overall because they'll ride more often and go for longer rides -- does make sense once you get past the headline.
If you need that level of detail to understand the findings that the article discusses, I'd suggest you read the studies. In spite of some questionable writing, the author does link to them.
It's just clickbait and a lie, when comparing to the statements in the sources they link.
Both sources are their own news, with both saying it's less exercise on an e-bike. But by the concept of an e-bike, there is the possibility to ride more/longer/farther, which can lead - depending on the extra range - to more exercise, than a bike without motor.