This is one of those things that you know something looks wrong or cheap, but you don't know why. Once you know though you can't unsee it, and it's absolutely horrible.
I think a lot of people have tvs that can't handle darks well, so things like the dark knight, game of thrones, I remember the departed especially, if you have a lot of shadow it won't show at all. So there was already a push from consumers to make things "easier to see" at the expense of good cinematography.
Netflix though is the worst because they encourage and actively push for people to watch big block uster hits on their phones and tablets while commuting or out and about. Turns out big movies don't really look great on a 4.3 inch screen, and so my tin foil hat theory is all this over brightness is to make things easy to watch on formats that aren't good for them.
But line must go up. They make more money when you watch a big budget drama on your cracked iPhone, so screw actual good lighting. Otherwise you might watch a YouTube video or social media instead of giving them views.
(If you like movies at all and you are getting a new TV, just get an OLED. Trust me. Just do it. It's more expensive yes but you just need to. Movies look so much better. I even got the wife begrudging approval that even she admits it was worth the cost. There's so much you're missing on the dark range, and it's insane how ina dark scene there is no backlight, there's just nothing, the panel is off, it makes the watching experience better)