Was looking at that Cliqz company out of curiosity and while browsing their job page ( https://cliqz.com/en/about/careers/campaign-manager ) saw this: "MyOffrz is opening a brand new marketing discipline: Browser Based Performance Marketing. This innovative technology makes it possible to show users discounts, special offers and valuable information with true added value within the browser. As a 100% subsidiary of Cl…
Their entire premise is that they can do an ad-financed product with less invasive tracking. Obviously, that involves advertising people.
So even if they don't do "tracking", injecting ads surely isn't something the average user "signed up for" when downloading the browser.