Rupert and his minions don't just do prime time broadcast cartoons, there is also this:
[FX] announced Thursday that the animated spy comedy Archer has been picked up for a fourth season, as its current run continues to build in the ratings. ...
Say what you will about Fox, it believes in animation. And though Archer isn't done locally, or is covered by us, it has encouraged the cable network to try more animated series.
You can never have enough animated shows populating the cable and broadcast universe.