I wonder how many “less tech savvy” users use ddg, because in my experience people who actually care about their security are quite tech savvy as a rule - not necessarily in IT though. While the others use a default search engine/browser/whatever.
Those kind of people usually do not click on ads, have ads disabled and/or use ad blockers.
But because they are tech savvy, they the the ones friends and family ask what browser/search engine to use, so you end up with 20 more less tech savvy people on the platform, and they are probably the ones that end up clicking on ads (because, again, DDG is making a ton of money with that)