I don't really know what's wrong with that. That's one way to monetize this site and I think it's pretty harmless.
I find this site very useful to me, maybe not this one he linked, which really looks like book marketing, but idea of experts recommending books is useful
I'm always wary of undisclosed affiliate links. Sometimes it's monetization of genuine recommendations, sometimes it's just "I pulled a bunch of possibly-mediocre books related to a domain I can easily talk about so I can better monetize a blog post".
It's disclosed on the site.
"Shrouded" isn't the word I would use when the footer of the article states they participate in amazon's affiliate program and make money off qualifying purchases
They're giving you book recommendations. Don't they deserve something for that?
The article is a shrouded puff peice for the interviewee.
No harm in reading books , also is it a crime to try to make money?