Why would she mention 28 years?
Homer Simpson is a very popular cartoon character from the show "the Simpsons," for the 28 years since the show first premiered in 1989 (the video is from 2017). Thus, she is recognizing the popularity of the character for nearly three decades, which is a remarkable feat to have achieved. It's not to indicate the age of the character, but to emphasize the length of time that the character has been popular for. Ex: For over 30 years, this restaurant has served its community. Ex: Over the last ten years, I've had jobs as a cafe server, teacher, singer, and lawyer.
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