I see. I tried to get on overview on the topics “Mac / NVida / OpenGL / eGPU / Blender”. The consensus seems to be that fully supporting the Mac ecosystem the way it is evolving “is probably not worth the development time for the few users.”
I strongly disagree. We need to convince BF to support Metal. I do not care so much about Apple and its policies, but there are a lot of real people and artists using macs for various reasons (including me) and losing them because Apples recent decision are questionable for some would be a pity. After all, creative freedom includes free choice of platform, because creation is not only about one app.
As far as one can tell the BF has never been better. With the new development fund there are even more recourses available. I hope that BF is still commited to all their loyal users, regardless which platform they use.
P.S. As long as I have used Macs, I also have used PCs. Right next to me is a HP behemoth with countless cores and a really nice NVidia card. I tried to like it and the Windows that it is running and do all my work on it. After a year I shifted back to the Macbook as the main device. Why? Because most things in Windows suck a little. Changing system settings, pairing devices, even basic things like BT audio, managing files and so on is always just a little bit more tedious and awkward than with macOS. The whole system is inconsistent in terms of UX and design. I can try to ignore that, but only for so long.
Admitted, Blender and other graphic related apps fly on that beast. But the rest of the time (which is a lot) I use to avoid the obstacles that Windows consists of and bend it to my will with things like Autohotkey or 3rd party file managers. On the Mac I just can focus on my work, which is quite a relief.