Earlier quoted context omitted.
Renaming accounts, redacting posts, etc. are all things that we do for users in general. We make no distinction between "high-ranking" users and others. We take care of these requests every day and have bent over backwards (e.g. spending hours writing code) to help people individually in cases where their needs were unusually complex. I can tell you for sure that whether the person is high- or low-status in $whoever'…
Why not just allow users to do on their own?
That doesn't mean we don't care about protecting users with privacy and other concerns—we certainly do, and like I said we take care of these every day. We just try to do it with more precise tools than wholesale deletion.
It's fundamentally a tradeoff: we're trying to balance the community interests of a public forum with the need to protect individuals. There's no perfect answer, but we're committed to both sides of it. Of the people who ask us for these things, well over 90% end up satisfied. Probably over 99%, but I don't want to make claims I'm not sure of!