Usenet often uses obfuscation to hide the contents of the files, which defeats most of the bots which are only matching filenames to their protected content.
I also prefer Usenet since I can encrypt my connection, whereas torrents require a bit more faith in your VPN provider than I’m comfortable with.
Wordpress is Open Source. Assuming the license is kept in tact and not violated, anyone can fork the code repository and release it to the public.