In my opinion the thing that aged the worst was the soundtrack. The Simon & Garfunkel songs from this movie are so iconic and timeless at this point that it doesn't feel like a soundtrack to me but like someone made a TikTok edit and put those songs over the film, if that makes sense. Nobody in my generation knows the connection between those songs they heard as part of pop culture and The Graduate. This is an impossible psychological barrier to pass for me. Simon and Garfunkel's "Sound of Silence" cannot dissolve into any movie's soundtrack for me when used unironically because I consider it a meme song (Mrs. Robinson as well to a lesser extent). It certainly would not have felt that way back then. I don't feel that way about modern songs with modern movies even though I recognize it is the exact same situation.