This meme uses humor and irony to engage with historical narratives and perspectives. People find it funny or clever because it plays on the 'Change My Mind' meme format, which often features controversial or provocative statements made with the challenge for others to disprove them. In this case, the meme takes a well-known figure, Columbus, and attributes him with bringing 'diversity,' a word often used in positive contexts, but contrasts it with the controversial history of his arrival in America.