I hate poverty, injustice, and bigotry. I cannot stir up strong feelings about an advertising company.
On the other hand I am a terrible advertising target, not wholly impervious to advertising but actively resistant, in part having seen under the bonnet of the sector and found little but a morass of grubby lies and folks with broken moral compasses. I intentionally interpret advertising as noise, not signal.
(corollary: attempts to disguise advertising are an irritant and a cognitive burden, so I allocate advertorials, content marketing, and drip-email compaigns to the Brand Damage circle of hell)
I use them for search as my default, and I would have used them for ads. I still might if they put a link there.
Apparently you have to sign up for some Microsoft ad platform, and then select DDG as one of the places to show your ads.