If he wanted people to know who he is, he wouldn't have used a throwaway account. Give the guy some privacy.
If he didn't want people to read his "ask me anything" post, he would not have made one on reddit.
Bottom line: the information is meant to be read but decency and common sense should prevent you from probing deeper. If you don't follow these guidelines, interesting people will stop posting online. Unrestrained curiosity in these situations leads to everyone losing.