Mozilla has been experiencing a trust problem for years, and should have done some real soul-searching and focusing on regaining that trust – which would allow it to dive into projects like the ad network thing with community support.
Instead, they keep doing things that either seem irrelevant, or outright alienate their core audience. Logo redesign. AI. Now the ads thing.
Or, well, what used to be their core audience:
https://neilzone.co.uk/2024/09/am-i-still-in-mozillas-target-audience/