Yeah, while it's possible DuckDuckGo is secretly evil, the API call in question seems to be perfectly innocuous. While the size of the screen is certainly one part of a fingerprint, there are far more benign uses for it, and trying to frame DDG as evil over such a benign use is misleading at best (and maliciously dishonest at worst).
I'm sticking this in my "guilty until proven innocent" file.
I'm sticking this in my "guilty until proven innocent" file.