On the other hand, the about us page lists an apparently real person as the founder, and there are links to a talk by him at a real conference: https://www.youtube.com/live/mRmjKZVkYgw?t=15681s

They've owned the domain since 2022, and changed it to explicitly say that it's not part of an ARG in June 2023: https://web.archive.org/web/20230630002958/https://blackmesa...