I think cartoons went off the rails a long time ago. Shows like Ren and Stimpy, Beavis and Butthead, The Simpsons, Pokemon, Spongebob Squarepants, Fairly-Odd Parents, and dozens of others - all in one way or another grab our children and either undermine our values we work to instill in them, or rot their brains with mindless time-wasters that are supposedly "so stupid it's funny".
Some may point to Loony-Toons, Warner Bros, or others and say that anthropomorphized animals doing repeated mortal violence and suffering no lasting physical consequence is just our generation's brain-rotting mindless time-wasting. Touche. All I will say is that in regards to entertainment, moral content, agenda, or any other stick one would use to measure, there is a far-cry's difference between Tom & Jerry and She-Zow.