It seems as though it was more a part of the Bing deal. In that MS said you can have Bing if you allow Bing and LinkedIn trackers. DDG were then able to negotiate a subsequent agreement that now blocks those trackers.
The failure to disclose the original MS tracker deal is slightly concerning but personally when I use DDG and just clear everything each session anyway and for the most part use Firefox with extensions for anything needing logins.
Miyoo/Anbernic present a much better option.