while not movie media, the same can be said with games. BG3 is blatently woke, hell the emperor blatently hits on the player regardless of gender and other elements. Elden Rings mythos is basically full of woke elements (Marika creating Radagon, who is basically herself, but in Male form to get into a romance with Renalla. just on this element alone, it is either considered trans (Marika having a clone who changed genders) or lesbian (if you choose to believe Marika is always female and trans not being a thing) as the relationship with renalla happened.)
while there will be people who will complain about it, if the contents good, people will overlook it.
the biggest reason is that draw commands of the same color can be space efficient. another is that the NES had to deal with 56 colors while modern images use 8 bits per color channel (RGB) meannig it has to store a lot more data it doesnt necessarily need.