This is a problem - I was getting 10-30 notifications a day - I've just switched off notifications for this app. It's a shame, as I'd like to be notified if some proper breaking news of significance actually happens. One of my notifications for instance was on Princess Eugenie's 29th birthday. I have zero interest in lifestyle stories, let alone those of the royalty - it is utter spam.
Yeah, the way to go is with a feed reader, so you can set up filters. Takes a while, but nothing is better than having your own personalized news feed.