I wanted to update this to clarify some things.
First and foremost, builds will continue for macOS, for the time being. It's a painful and sluggish process, but they are going to try to keep it going until it becomes untenable, which it IS becoming, due to the recent changes in Apple's ecosystem and the fact that there are multiple versions of old Intel hardware and OS X software to support. The lone dev who has been maintaining the macOS builds uses an ancient Macbook with equally ancient software that can't be updated, so he can't do anything further with his own meager resources and the ideal plan is to have several people, with several generations of Mac hardware/software doing the work, but it's impractical and untenable without significantly more resources available. That means that without a dedicated dev team solely for macOS hardware/software, the software will become unavailable on that platform. One idea being considered, is to abandon the Intel Mac hardware entirely and focus entirely on the ARM64 development, as the limited dev resources would be better utilized that way. Another issue is that Apple has abandoned the ancient and unsupported OpenCL API - a key part of darktable's infrastructure for multi-platform use - in their products and may remove it's functionality through their OS software updates, which will effectively end it's use and make it impossible to have darktable, without switching the macOS builds to newer APIs that may or may not be multi-platform.
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