I was glad the OP article didn't mention that theory.
I actually really believe that reason #1 in the article was the origin -- people actually liked reading the stories. When recipe blogs were new, and there were fewer of them, it was common to actually check back on the blogs and see if they had posted new content. I used to follow a number of recipe blogs, including Orangette, which I really liked, and would both read her stories and try her recipes. She (like similar bloggers) developed enough of a following that she was then hired by the Times to write similar recipes and stories.
Heck, speaking of the Times, or other newspapers, they almost always intro a recipe with a story of some kind. This is not just for copyright reasons, but because people actually read them. (e.g. [1])
This audience is different from the one who just googles "Meatloaf recipe" and clicks on the one with the most stars. When you do that, then no, you generally don't want to hear the "life story." But maybe some readers do read it, it connects with them, and then they actually go back to that same site again.
1. https://www.nytimes.com/2023/01/25/dining/citrus-salad-almon...
The TEXT of a recipe is, at least to the extent it is minimally creative.
[1] https://www.copyrightlaws.com/copyright-protection-recipes/