General Discussion
In reply to the discussion: Why are almost all TV comedy "idiots, buffoons and dumbasses" male? [View all]mathematic
(1,610 posts)Stan from American Dad isn't an idiot, he's blinded by ideology. He's usually portrayed as competent and stories are driven by him becoming less clueless as his "real life" contradicts his ideology (like when the gay neighbors moved in). If you're including smaller, supporting characters, the stoner boyfriend is an idiot but his purpose is as a foil to Stan.
Cleveland from The Cleveland Show is a bit of a mixed bag. I don't think the writers on that show ever settled on any characterization for any of the characters. Cleveland is capable, reasonable, and "boring". The comedy was supposed to come from his family not respecting him because of his dullness. It didn't. So the writers tried all sorts of things to make The Cleveland Show funny. They pretty much cycled through every sitcom trope. None of it worked.
This was just a bit of an aside. I do agree with you that this type of character has been increasing in its acceptability since at least the 90s. So much so that established characterizations will occasionally get suspended to do an easy/lazy story where "dad is an idiot". Hey, 20+ episodes a year can be tough to fill.