I definitely felt misled, when I first learned about this, back when they censored Tank Man the same time Bing did[0]. I did remain a user though, mostly because I haven't felt like keeping up who the current good guys are. Lately I have been considering Kagi, but I don't like it that I need to log in on all my devices, and then I have to have a fallback, for when I'm not on my own devices.
So yeah, for my intents and purposes, DDG is a frontend to Bing. I do appreciate how uncluttered it is though, in comparison.
https://en.wikipedia.org/wiki/Tank_Man#Censorship