Yes, there is now a block of ads in the middle of the list of topics. Ads are placed where the advertisers pay for them to be placed. In your opinion they might be intrusive, but they have no audio autoplay, they don't do screen takeovers or pop-unders. They just sit between the topics.
This is caused by people using adblock. The site is busier than ever and yet the number of ad impressions is back to 2012 levels. I've moved to a single ad partner so that we might actually be able to get bad adverts fixed. They don't pay as much as the several networks I used previously. Revenue is down and costs are up. What do you want me to do?
I don't believe you'll notice them in a week, but if you do then I'm happy to re-assess at that point.