Scraping the barrel! To be fair, the 'Recommended for you' feed contains pretty decent stuff these days, as it's all been boosted and so vetted twice over.

Whether it's actually relevant to the specific recipient of the feed is another matter. Like that copy of National Geographic in the dentist's waiting room - if you have time to kill, you may learn something you never knew you were interested in. But it's never going to be a priority use of your time.