"Privacy-Preserving" Attribution: Mozilla Disappoints Us Yet Again

99% of their users are not these things

I don't think so. People using Firefox are freaking evangelists trying to spread privacy. And if Firefox should lose those people, it will truly be the end

Privacy based advertizing:

1. Develop ad
2. Think about what websites your target demographic will probably frequent. (Be creative, dear marketing person! You can do it! This is the essence of what you're getting paid for!)
3. Pay those sites to display your ad

Done.

Forget about the technical details and whether the user understands what it is.

No. Why? It's simple. They are collecting data I don't want the ad networks to have instead of the ad networks and give it to the ad networks. That's only more private than the status quo if I'm okay with them to have this data and trust them to handle it responsibly. Which I have no reason to.

which is why they correctly say that the user won't understand the Feature.

See explanation above. That's not too complicated to explain to a person that managed to turn on the computer. It only gets complicated when you try to follow the mental gymnastics you need to think this feature adds privacy for anybody.