There are two things I don't like about DDG. I can't find a way to have same interface colours I have, in Search screen, with Google and Dark Reader together. That is just more readable and comfortable for eyes. With DDG, with or without Dark Reader, I have other tints of black, blue and purple, the 3 major colours in the seach screen.
And the other thing, is the lack of a proper integration with Google services (maps, youtube, etc). When you search for an address, it doesn't immediately show Google maps screen of it, but you have to do 3-4 clicks to have that.