They call it the "DuckDuckGo Privacy Browser" yet it sends data back to their servers on every site you visit. Collecting all your search terms and saving them wasn't enough, now they want data on all the sites you visit outside of the DDG search page. That they refuse to turn it off tells you they are just as data-focused as every other company. They should update their app description: "By the way, every website you visit is being sent back to our servers, don't worry it's just for data collection purposes, no personal information, just every website you visit (LOL)"
For those of you who don't understand, Yes they are saving data on all your search terms, and Yes they are saving data on these favicon requests, don't be so naive, they admit it themselves. They are not going to turn this feature off because it is too valuable to have all your information on all the sites you visit