Hey, I made this! Feel free to ask anything.
I released this in 2016. It was a significant undertaking and I burned out pretty hard afterwards. I was operating under a naive "if you build it, they will come" model whereby building a modern-looking website, the community would coalesce around it and contribute to the wiki etc. But my "rallying people behind a cause" skills were insufficient.
One nice contribution: at the time Common Lisp didn't really have an official logo, which I felt was bad for marketing. So my friend made one: https://github.com/LispLang/lisplang.github.io/blob/master/a...
This was decidedly a social rather than technical effort, and social problems are hard to solve.
The website looks good! Do you still use Common Lisp? If not, what are the reasons?