And I watched them. Maybe you didn't?
Edit: Heck, "I Love Lucy" aired in the early 1950s and the show's entire plot was about an interracial marriage. And that show only started two years after commercial TV in most homes was even a thing. It was the very first sitcom to be a #1 rated show.
The "bad times" scenario you're depicting is largely a fiction. What was that Jennifer Lawrence quote? “I remember when I was doing 'Hunger Games,' nobody had ever put a woman in the lead of an action movie because it wouldn't work — we were told girls and boys can both identify with a male lead, but boys cannot identify with a female lead,”