I used Unread as my RSS reader prior to Apple News. It has a nice minimalist design and a reader view function that loads full articles without forcing you to view the original website, so you get all the content with no ads and good formatting. It gets its RSS information from my Feedly account, and can connect with other newsreaders as well. My biggest complaint with the app was that it took a long time to refresh and show new articles, even when manually refreshing.
Then Apple News came out. I tried it for a week. The only improvements over Unread that I could see was images in the list view (Unread is text only in list view), and faster refresh. However, ads were all over the place and I couldn't tell Apple that I disliked specific articles. Since much of their delivery algorithm is based on generic categories (entertainment, politics, science, etc), I got a lot of crap like People magazine and stuff and it cluttered up the feed. I ended up removing the generic categories from my list of likes but the ads still remained, and for most articles I was still clicking through to the website, only now instead of Safari where I have an ad blocker, it was in Apple News.
After that week I went back to Unread and lo and behold, their refresh had been fixed and it was now almost instantaneous. Now the only gripe I have with it is that some articles get listed with a future date and sit at the top of my article list until that date passes, but it's usually one or two articles tops. I threw Apple News in a folder and haven't looked at it again. Unread is superior in almost every way.
Edit: Since people mentioned it, I just pulled up an article from my search page, it was from the Washington Post. The article loaded in Apple News and then was immediately obscured by a full page ad. I closed the app, didn't even read the article.