Parts of it are wrong or missing. A majority of it is outdated. When I wrote it, ActivityPub wasn't even a conversation that was coming up outside of hypotheticals. The reason I did the interviews was to write a deeper history piece and put together a verbal history. This at least has motivated me to finish that piece of it.
A majority is outdated - you can write a living history, but that was what was available at the time.  
None of this really matters though, this is an obscure little corner of the internet that only nerds and jerks use.