This happens in physical media release as well, mostly i've seen music replaced with cheaper licensed music, I think the most recent physical releases of 'Community' still contain the episode that includes the 'Advanced Dungeons and Dragons' episode, that has been removed from netflix due to the use of Blackface (One character arrives at the game in blackface (actually jet black with a white wig) because his character is a Drow (dark elf), other characters call him out for being racist but he explains his character's backstory)