The Culling had been left broken on Linux for quite some time, but as promised the developers have tried to fix it. It now works, well, sort of anyway.
It seems my last article about The Culling got noticed by the developer, who reached out to me to confirm their commitment to Linux and they do plan to fix it.
In another case of a game developer seemingly not caring about the Linux version, The Culling is currently broken on Linux with no reply from the developer when asking about it.