Many articles nowadays are behind a paywall. So when I want to add an article from a paid newspaper to Pocket, I figured out that that portal just tries to grab the article itself instead of taking it from Firefox directly. Which means that you just see the part of the article you see when you aren’t logged in.
Does that make any sense? Not really.
Bookmarks don’t do the job, because you can’t read the article anymore
That’s a fair point. So I guess the purpose that it actually serves is bookmarking and saving the page at the same time. I can definitely see the use in that actually.