That isn't to say the Academy hates animated films. They have a separate category to honor them; Best Animated Feature Film, starting in 2001 with its winner, Shrek. Or maybe, just maybe, the Academy has some weird prejudice against animated films.
Shrek was the most popular film to have come out in 2001. It had adult humor, an all-star cast, a blockbuster fairy tale, and CG animation from a barely recognized (at the time) studio, Dreamworks. This movie was a monster hit, residing praise from critics, audiences, and an overwhelming heap pile of cash that was its own box office.