With hatred and violence people are willing to post under their real name on Facebook, I sincerely doubt that enforcing a real name policy like the Chinese government is trying to enforce will make a difference.

People are more toxic when they're anonymous, but de-anonymizing people isn't a solution to toxicity.

I don't want to give up the ability for gay/trans/whatever people in oppressive societies to express themselves because someone was mean to me on Twitter once.

There are platforms out there that will enforce real name policies. You're free to leave communities that don't and enjoy a theoretical community where people are held up to standards if these policies work. You could even add your information to your account description if you don't care about your data and want to shape the community to your liking by setting an example for others. Just don't take down the rest of the internet with you because you don't care. I'm not in the Equifax leak or in any other American credit rating provider leak, so leave me out of your weird post-privacy world, thank you very much.