Why would you think it is dead, there are regular updates and the patreon version is updated too.
But you might be right about the public version, even so I'm sure to remember them say that another Demo-Build was planned, but that was somewhere in the middle or end of 2022.
Viewing post in When's the game will receive an update?
While I'd love to argue with a complete stranger over the definition of vapourware and how the term evolved since the olden days in this age of GaaS hellscape, 'tis a fool's errand. And not one worth wasting my time over tbph.
All *I* will say about this one particular case is that, for better or worse, some of us remember how it started a long time ago, and have been around to evaluate how it's going. It does not look good when compared with other, similar endeavours. And considering *my* previous experience with both development hell and the gaming business, I highly doubt it will ever see a release date, if nothing else, then purely because of very obvious, monetary reasons.