> Someone who wrote a racist or anti-Semitic comment in 2007 could have evolved to deeper understanding and to a more compassionate worldview. But the writing remains forever, conveniently accessible.

Not all writing is equal. There is a difference between let's say a tweet that was sent in during a flamewar versus a personal blog post that has been penned in the past and stayed published until today. The function of the latter is closer to a book, in that it explicitly aims to persist and communicate thoughts through time. If one changes, they could have taken the post down. If there was regret about the contents, one could have published an update/apology etc with the post.

And the post wasn't picked from a web archive; it had stayed up until it the pushback reached career threatening levels. Yet there is still no evidence or apology in any medium that the person has actually changed their viewpoint. All we have is other people apologizing on their behalf with speculative redemption.