And since that post they have added a note to their app info page on Google play (and presumably elsewhere) saying >Note About our Tracker Blocking: While we b

And since that post they have added a note to their app info page on Google play (and presumably elsewhere) saying >Note About our Tracker Blocking: While we block all cross-site (3rd party) cookies on other sites you visit, we cannot block all hidden tracking scripts on non-DuckDuckGo sites for a variety of reasons including: new scripts pop up all the time making them difficult to find, blocking some scripts creates breakage making parts or all of the page unusable, some we are prevented from blocking due to contractual restrictions with Microsoft. Sure they could have revealed this better, but it doesn't really seem like they were trying to hide it.