That strikes me as an odd opinion. Surely the colorspaces and display technologies that predate HDR had as much dynamic range as they could reasonably squeeze out of the technology at the time. Is it the brightness specifically that bugs you? I could understand that, although brightness is not directly related to HDR (in the same way that loudness in digital audio is not directly related to bit depth).
Of course I do agree that these things should be configurable. And on my MacBook Pro, I can set the built-in display to sRGB. Is that option not available on your particular Mac and display?
> That strikes me as an odd opinion. Surely the colorspaces and display technologies that predate HDR had as much dynamic range as they could reasonably squeeze out of the technology at the time.
Some of it was just bad historical decisions. In particular SDR video only uses the values 16-235 instead of 0-255 because of some NTSC compatibility thing I don't quite remember. That's a huge loss!