Did not know this had happened, but does seem PHK (the original author of Varnish) is now with of the Vinyl Cache project, so this is not just a typical fork.
What's the deal with Antirez and PHK refusing to add TLS support?
I appreciate the mysql/mariadb comparison.
This is the first I've actually heard of the name change... I used to use Varnish quite a bit, and had a decent grasp of VCL, for Drupal deployments. But I think Varnish 6 or 7 was when I started dropping off managing the caching layer as almost every project chose to offload caching to Cloudflare.