>>92423836I'm not an avid Family Guy viewer, but regarding the jokes, it seems to be that not only are they needlessly mean, but they don't even really qualify as jokes.
There's a way to do black comedy/mean-spirited humor--Classic Simpsons did it well with Homer's suffering, and Classic PPG also did it well with how needlessly violent the girls were in some situations that clearly didn't call for it. But it worked in a way that you weren't overly shocked and it was arguably pretty funny.
With Family Guy sometimes it's like they just get off on animating cruelty that doesn't have a punchline.