If third parties can solve this issue, why can’t Apple?
Why waste the development time on something that's already been done?
Why don't Firefox, Chrome, Edge, Internet Explorer, Opera, etc. have their own ad blocking? Same reason.
I don’t want third parties with dubious motives selling my entire viewing history because I use their ad blocker.
So, you just make up things about apps you don't want to use? Prove the ad blocker you're interested in does that.
If you use Chrome, Google Earth or any other app made by Google, you're already freely giving up a lot more information than that without your knowledge.
I guess the real takeaway from such a statement is; where do people get the idea that if the software isn't directly from Apple, it's automatically malicious, sneaky, etc.? Guess I'd better delete all of these "bad" apps from my Mac, despite the fact I have no other way to get my work done with anything made by Apple.
Photoshop
Quark XPress
InDesign
Illustrator
i1 Profiler
Muse
Acrobat Pro
and many more.