The Pocket reader seems unnecessarily hobbled to me. It appears that it won't sync anything you save to Pocket unless it is detected as an "Article" category.

News site, fine, my blog, fine but a doc-site type thing, nope.

I use my Kobo Forma mostly for technical books and technical manuals, for example the Kubernetes reference docs, but I couldn't save the doc-sites to Pocket and have the Kobo sync it, and had to use a computer to save and convert it.