The fact that so many people didn't know about the fact, that #duckduckgo used #bing search results for years just shows how little people care about products they're using, even if they "care" about it. Such a con-ish behavior. Maybe next time just READ about what you use on a daily basis, and don't follow the "techy" herd, that've said "this is cool to use"?
https://duckduckgo.com/duckduckgo-help-pages/results/sources/