Considering the situation with LibreOffice at the time of the transfer, I have to wonder why ASF even accepted OOo from Oracle in the first place.
If there are using a pseudonym then obviously they don't want to be found by their real name. I would argue that their right to privacy is greater than your right to find them.
From what I understand, Amazon hasn't removed books from anyone's Kindle. You just can't redown it if you lose it.