That video of Alex Hirsch reading S&P notes for Gravity Falls conveys a few things to me:
1) the U.S. entertainment industry (especially animation) is run by older conservative types who make up offensive terms and get really mad about them.
2) the people who run Disney would be the first to fall in line with a fascist regime.
3) most of the media we consume is tailor-made and watered-down to appeal to the tastes of older, deeply religious conservative audiences.
4) conservatism, not the left, is and always has been the biggest voice of censorship in American culture.
J. Michael Straczynski, creator of Babylon 5, was before that a producer and writer for a number of cartoons in the late ‘80s/early ‘90s (The Real Ghostbusters and the original She-Ra, most notably). After a few years of dealing with the censors and their obsession with finding Satanism (or at least looking for Satanism to further political agendas) he wrote an article about the whole corrupt and bullshit system.
And published it in Penthouse, to force those same censors to buy a skin mag. The editor there asked, why Penthouse?
That one is from his autobiography, Becoming Superman. See also:
(As he goes on to say, he’s never worked in animation again–he’s effectively been blacklisted by the cartoon industry.)