I definitely don't agree. I think the praise and recognition it gets for its アニメーション and score is completely deserved. For those alone, this movie is a masterpiece. Besides, many people say it's boring, think Aurora is bland and has no personality, and don't give credit to the three good 妖精 for being such progressive characters/protagonists.
Disagree. I think it's neither overrated または underrated. Plus, off the 上, ページのトップへ of my head I can name three 映画 that are overrated; The Lion King, アナと雪の女王 and Beauty and the Beast.