The rules of television are always changing. One minute, married couples can't share a bed, then a mere decade later, divorce and abortion are on the menu. So, sure, it's hard to predict how a story will age.
But there are some topics and tropes that should maybe not make it out of the writers room. Or even into
the writers room, depending on the show. A few examples come to mind: children drinking, statues shooting firearms, and anyone in blackface