An attestation-like system to detect humanity at time of post is absolutely for useful online spaces in the era of AI slop.
The writing style of the author is very annoying.
Until people hit "attest" and then copy the text from ChatGPT.
It could be done with anonymous credentials though. No tracing to who the human is.
And people should be free to pick and choose whether they want to use sites that do that or not. Whatever hacker news does seems to be fine for me, and I did not need to verify my ID in any way (even though it's very easy to figure out who I am from this profile)