Firefox isn’t doing much to stem the online dependency on ads. We really need an alternative monetization system. The internet is only half functioning if we still require massive corporations to intermediate between us and content providers.
It is doing a lot to stem the online dependency on tracking, however, which I think is far more important. DuckDuckGo monetises through as, and I have absolutely no problem with that.
Your specific tracking, perhaps not. Once it gets to a point where it influences election results in your country, or prevents you from getting insurance, etc., it does.
But no, DDG doesn't offer a paid option, as far as I know. (I also doubt there would be a sufficient market for that.)