Maybe to have a separate "get more info" is worse for business. At least for me, the opposite it is true. It makes me hesitate to click in the "buy" button just to find more about the product.
When you advertise traditionally you don't get a lot of information back from consumers other than those who start or make a purchase. The more actions you put between discovery and purchase, the more you can refine parts of the process.
There are probably other psychological elements at play as well about gradually introducing information so you can strategically present the better aspects of something before you talk about say an ugly cost.
Also, the article is spot on about the tediousness of the online applications. I applied to a position at my kids’ school last year. School websites are awful enough but then they bounce you into a separate portal for the application. And the flow is built around the most complicated job that they might need to hire for. So, to get a job as, say, a p/t middle school soccer coach or night custodian, you have to go through all these steps that really don’t apply. And of course then they moan about how hard it is to fill positions.
I used to think that too, until I clicked a similar button on Amazon...
(Yes it expired was contested etc.)