"You couldn't make that today." This is a refrain many have heard since the wave of political correctness swept over the cultural landscape in the early 1990s. Changing tastes and sensitivities will always make certain things that came before seem crass and offensive by new standards, and comedy is almost always the canon fodder on the front lines. Many Seinfeld episodes have been brought up recently in this vein as the show is in heavy syndication across cable and broadcast as well as one of the best-performing titles on Netflix.
Source:https://www.cbr.com/seinfeld-puerto-rican-day-controversy/