I still remember growing up as a kid, my parents would constantly monitor the CRT to make sure I wasn't watching the Simpsons because it was "not for kids" :)

I haven't been following much of the show but it could also be the writers toned down the content as the show progressed through the years to the point where Disney wouldn't mind airing it? It could also just be them recognizing the pull the Simpson has on viewers and they're using it as the initial bait to attract subscribers but have it pulled once they have enough customers? Who knows, but either way I do agree this combination was one I would've never imagined as a kid.