Earlier quoted context omitted.
I‘m pretty sure it was always just a proxy for bing. Just stripping away the Microsoft tracking. https://news.ycombinator.com/item?id=27394925
DDG was once caught red-handed of tracking for Microsoft: https://techcrunch.com/2022/05/24/ddg-microsoft-tracking-blo...
Or put another way, if their browser had no content blocker (like the stock browsers of any mobile OS), their browser would be behaving like all the others. The scrutiny came from the conspicuous exclusion, given their arrangement with Bing (much like the controversy of Adblock Plus many years ago).