To me, this only makes sense if it's integrated advertising in the browser. Trying to get third party websites to use their advertising network probably will be a very difficult sale.

It could be a way of greenwashing, or whatever the expression is for privacy washing, businesses like meta, Google, by letting them license a "privacy friendly" advertisement platform.

As far as I'm aware, there's only two major online advertising platforms, meta and Google. So breaking in is a third platform would be difficult, unless they could integrate into apps directly through Mozilla's app footprint

https://www.anonymco.com/

driving advertising performance requires privacy-enhancing approaches to data driven marketing. Anonym’s privacy preserving solutions allow you to take full advantage of your data assets.

Fundamentally, privacy and data-driven marketing are diametrically opposed

Basically I see two options:

1. This works for advertisers and based on your "profile" you are strongly influenced by the ads shown to you. So might just as well give your data to Meta and Google, who already sell profiled (and not individualised) ads.

2. This doesn't work for advertisers and you are not strongly influence by the ads shown to you. So the advertisers could just as well put a link somewhere and hope it is found by their target audience.

Also I don't my browser, my OS or any other core component on my system to be in bed with people who are trying to extract as much money as possible from me.

Sounds like Chrome's Privacy Sandbox.