I don't understand the logic. They're more private for admitting that they don't respect your privacy?
Mozilla meanwhile claims to be the champion of digital privacy, marketing Firefox as the private browser of choice along with a host of ostensibly privacy products such as VPN, all the while also siphoning data. Turning it all off requires digging deep into about:config.
One group is honest (or at least relatively more so) about what they do. The other entity is a pathological liar led by a queen on Google's leash for controlled opposition purposes. As such, I daresay Microsoft and Google are more private than Mozilla because you know what you sign up for.
Oh come on, Baker was around since the Netscape days. You just don't like her cause she was a Suit, and that's fine. But except for a bunch of engineers Netscape had a bunch of Suits. It's not some conspiracy that a Suit is still running things.
Compare the data. Mozilla may be less honest than Google and Microsoft (a premise I also disagree with), but they are demonstrably harvesting much less data.