As I said already, it's down to personal preference. I just don't imagine that most people care about having the best looking video they can get on one device but don't care on another to the point where they'd sacrifice quality on device A for better quality on device B.

It’s exactly the case. Every room isn’t a home theater. We want the best quality for the home theater and “good enough” for the rest. To my surprise, others do notice the washed out effect of watching HDR content on an SDR TV, or worse the wrong colors when watching DV content on an SDR TV.

Acquiring, storing, and organizing multiple files for the same video is a hassle. Even more hassle is asking others to know which is the right one for that TV.