Sorry, maybe I'm misunderstanding. It's just that none of what you've listed is inherent to the fediverse? There's nothing preventing data collection of that sort by an instance owner, and claiming anonymity on a system explicitly designed around open ledger social media doesn't seem entirely credible. There's nothing preventing someone from including tracking pixels, for example, and your browser can still be fingerprinted and linked to your activity on lemmy by 3rd parties through a number of meta-analytical approaches.
I love the fediverse and there's lots of good reasons for that, but I really just don't think anonymity is a selling point here. Again, might be misunderstanding what you mean, if so I apologize!
That makes sense, thank you!