Is "Multithreading - The Delphi Way" by Martin Harvey still relevant nowadays to read if not to use at least?

Is "Multithreading - The Delphi Way" by Martin Harvey still relevant nowadays to read if not to use at least?
http://www.nickhodges.com/MultiThreadingInDelphi/ToC.html
At some point in time it could had been a book but that didn't happen obviously.
Thanks to Nick Hodges for hosting this nice piece for so much time.
http://www.nickhodges.com/MultiThreadingInDelphi/ToC.html