The writing was on the wall for Pocket when paywalls started to go up everywhere a few years ago. By that point, it could no longer scrape articles reliably.
Before that, it's Discovery feature was great for surfacing long form writing on the Net, but even then there were issues because they'd pull a lot of content mill slop from Inc.com, Entrepreneur.com and there was no real way to block domains. Finally, when the good "new media" outlets started shutting down, Pocket's content library went down with it.