This is a bit embarassing. For almost a day http://www.vyos.net (but not http://vyos.net) was sending people to the http://dead.vyos.net website, until someone on the IRC pointed it out (thanks for this!).
It happened due to an oddity in the way Apache HTTPD handles host aliases, and it's fixed now.
The dead.vyos.net website was created as a joke for giving the link to people who ask if VyOS project is dead. While the website is indeed a joke, the issue with lack of contributors is very real, and it does slow things down.
If you want to contribute to VyOS, there is a lot of work to be done, and the maintainers on the IRC and in phabricator will be happy to point you to beginner-friendly tasks and answer questions about the code and the patch submission process.