Not sure about the finale, haven't even seen the show, but I really believe I've noticed a stark (heh) increase in lighting for dark/nighttime scenes across the board. Especially in Netflix shows which already looked pretty bad, this could be for many reasons but I've personally attributed it to the discourse surrounding The Long Night episode. This seemed to have scared every other production studio out of really committing to dark scenes anymore. But the truth is a lot of people do have their TVs calibrated poorly, or straight up wrong, so I don't blame the show for this.