The article shows a screenshot where a heatmap shows how users click on the "Get Started" button a lot and then goes on to state:
Looking at these results, the CTA variation design results are much more focused, with hardly any clicks on other elements. I’m calling this a win.
As if getting people to click this button was the goal. Which is is not, the conversion to an engaged user/customer is.
The alternative there was a email input field plus button, which also received the bulk of the clicks, and immediately resulted in commited users providing vital contact information.
For example,
i would click this button to see whats hidden and subsequently leave the site anyway. Many users clicking this button as the heatmap shows are not actually engaged and converted..