Old shows were better for kids
Shows showed the better part of society. The Andy Griffith show for example Andy was the classic good guy and always made the best decisions. He was a cop but he was a member of the community before just a law enforcer. Was there even negative stuff in media back in the days? Now they have BET and MTV showing transgender stuff and weird music videos with women twerking and music about selling drugs and robbing people. It seems like the popular media now is kind of negative for kids to watch. Especially when they glamorize criminal and weird behavior.
Kids seem to look up to whoever is the popular/cool people. When the perceived cool guys are bragging about being criminals they move into that direction. Maybe it was just me but I definitely did until I grew out of it.