I bought a $5 keto recipes book at my big-chain grocery store's checkout.
It's a lot easier to just try a new recipe when it's not tied up inside a 100-comment Reddit thread debating its nutritional value.
I don't mind that so much because it's easy to skip the fluff - you can find the ingredients and method in under a second since no scrolling is involved
I also wouldn't be surprised if the fluff is there because it was originally written for web and chanced upon finding a publisher
Some examples from cookbooks: https://www.maangchi.com/wp-content/uploads/2015/01/mul-naen...
https://www.cookbookdivas.com/wp-content/uploads/2021/10/Cel...