No, it's served from the same domain as the content. They're static images, so the ad and the in-copy diagram are actually from the same source. It's a bit heavy-handed here, but honestly, this is the sort of advertising I don't mind not blocking.
Exactly it's not third party, hopefully not selling the tracking info and it's aimed at the same interest group that reads the article. Might even be useful as opposed to all the targeting ads that never ever made sense to me.
It's always gonna be hard to block first party ads that come from the same domain as the content. Fortunately almost no ads like this are really malicious.