In reply to freeflyer:
On my huge and fantastic iMac retina 4K 21.5 inch desktop monitor in my office of course I can see it. But 95% of the time most people on this planet, including myself, are not using such things but a lap top, iPhone, iBook etc, etc, etc, out in the real world, often out of doors in quite bright conditions, etc etc. Also, I assume most people would only be using the Dark Mode quite rarely at night, e.g. in bed, on an iBook or laptop of some kind. Also, I think most people would not have their screen on maximum brightness, particularly if they're in bed with someone else
Post edited at 23:41