What grinds my gears is that HDR output in a lot of software is "Mac only", even though Windows supports HDR video output just fine, and has had support for wide-color and HDR since Vista!
E.g.: DaVinci Resolve has HDR capable only in its Mac version.
Similarly, generating a Dolby Vision file is basically impossible on Windows.
"Just buy a Mac" seems to be the best and most practical guidance I've seen for HDR workflows...