I think you're being too conspiracy theorist here by making everything black and white.
Besides, the main problem of how difficult it is to deanonymize, not if possible.
Privacy and security both have to perfect defense. For example, there's no passwords that are unhackable. There are only passwords that cannot be hacked with our current technology, budgets, and lifetime. But you could brute force my HN password, it would just take billions of years.
The same distinction it's important here. My threat model on HN doesn't care if you need to spend millions of dollars nor thousands of hours to deanonymize me. My handle is here to discourage that and to allow me to speak more freely about certain topics. I'm not trying to hide from nation states, I'm trying to hide from my peers in AI and tech. So I can freely discuss my opinions, which includes criticizing my own community (something I think everyone should do! Be critical of the communities we associate with). And moreso I want people to consider my points on their merit alone, not on my identity nor status.
If I was trying to hide from nation states I'd do things very very differently, such as not posting on HN.
I'm not afraid of my handle being deanonymized, but I still think we should recognize the dangers of the future we are creating.
By oversimplifying you've created the position that this is a lost cause, as if we already lost and that because we lost we can't change. There are multiple fallacies here. The future has yet to be written.
If you really believe it is deterministic then what is the point to anything? To have desires it opinions? Are were just waiting to see which algorithm wins out? Or are we the algorithms playing themselves out? If it's deterministic wouldn't you be happy if the freedom algorithm won and this moment is an inflection in your programming? I guess that's impossible to say in an objective manner but I'd hope that's how it plays out