> . I don't create new accounts, I never cross-login with my email address
I honestly tend to think this is the only viable long term strategy.
Let's face it: In a truly global internet where every single forum or website is hosted in a different country with a different jurisdiction, hoping that every single actor will act responsibly is just delusional.
It is not what we see. It is not happening and it is not going to happen.
Individual need to have right to online privacy.
That's means the right to get proxy email address, proxy phone number, proxy physical address and even proxy identity (first name/family name).
The sooner the governments will accept that, the better.
If done right, it is not incompatible with a system where identities can be reconstructed by the authorities for legal actions.
If nothing is done, scams and blackmails will continue to spread like bushfire and proxies anonymity will happen anyway outside of any control.
Is the alternative just accepting that my data is out there? Even if I never used any online service, there are databases out there with my information anyway.
Just figure anything online that you aren't securing yourself is compromised. Minimize the effect that has on your life. Identify theft is annoying, but it rarely has severe effects.
You will have to go out of your way to be truly anonymous online, and it might be impossible if you aren't tech savvy enough. Otherwise, just assume everything you do online is public and act accordingly.
> If done right, it is not incompatible with a system where identities can be reconstructed by the authorities for legal actions.
Doing it right is exactly the thing that makes this impossible. If instead you give everyone a unique barcode that every other pseudonym can be tied back to, do you really think that database will never be breached? It would become the prime target for all attackers in the world.
Meanwhile reconstructing "identities" is the least valuable thing to doing law enforcement well, because the first thing criminals will do is use someone else's identity, and then tying something to the wrong identity isn't just useless, it's actively counterproductive. The thing you need is not centralized identity but proper investigations that can tie some activity to the person pulling the strings regardless of whose name they're using.
The thing centralized identity does is precisely the opposite -- it leads you to person associated with a name, often the wrong person. You want to get the person offering to do murder for hire to think they have a contract and show up somewhere you can arrest them regardless of whether you know their name, not to convict the person whose identity they stole.