It's called conditioning. The show devolved from a family centric-simpson like to a fuck everything wacky bullshit.
You have a gay baby who's definitely been touched in everyways, a dog grooming high school girls, Quagmire being exactly on the thin line, a father who mistreat everyone, especially meg, a uppity wife who tries to do the right thing but is just as bad as everyone and not to count everyone else who went to shit.
People who's been watching this show a long time ago has been conditioned to not give a shit no matter what's the subject, and those who are retarded enough to suck into the (((deep))) moment of the show usually forget all the retarded dying bullshit and killing jokes. You can't really do shit when it's dead obvious