I tried to read the blog post but doublespeak and marketing crap gives me an insta-migraine so I checked Reddit.

Mozilla now doubling down on ads in Firefox

Did whoever wrote that pile of marketing gibberish actually say a goddamned thing?

Oh, they said something. They said they believe it’s right and proper for advertisers to intrude into our lives and steal our time and attention, and they’re going to help them do that while claiming to be the “good guys” by inventing some nonsense that “protects privacy” a little more. Never mind that everyone’s main objection to ads isn’t that they compromise our privacy; we object to ads because they intrude on our experience, waste our time and disrupt our ability to focus on the content we seek.

The obvious corollary to this is that ad blockers will eventually be crippled, just like on Chrome, no doubt with the same “security” excuse.

From another thread

"Advertising funded search engines will be inherently biased towards the advertisers and away from the needs of consumers" - founders of Google in 1998.

But the siren song of money always wins.