I accept DDG's statement that this is about a favicon and that they "do not collect or share any personal information", and despite that, I also agree with others that DDG should be on the safe side and just stop doing this small thing. It's just the safer and more moral thing to do (So DDG, as many are suggesting, plz stop doing it. Today is good).
But... the reaction here is "they made a mistake, let's pile on like kids in a playground" ignoring the genuinely huger issue of the amount of info and mining that google et al. do. There's no measure of proportion in the responses, someone is making a mistake then there's a wolfish, pack-like desire to get stuck in and hurt someone.
Which is why politicians rarely admit mistakes, because it's taken as a sign of weakness, not strength, to admit you were wrong. DDG isn't the big evil on the web but from reading some of these you'd think it was the 2nd google.
This isn't about DDG, just the proportionality of responses in public errors and what society you'd like to have.
(no affiliation to DDG)