In terms of performing, no. However, as a successful figure in pop culture, she is certainly underrated. Everything about her is fun. Her music, her personality and her overall charisma. She's such a star, but people write her off as someone who's only known for owning the Billboard Hot 100.
We don't know> Maybe the general public will figure out her truths someday. and the tween boys/gurls will grow up someday And its not like Katy is 19 or anything, she is 27. Just like Bieber is losing his fans due to his rudeness. Real talents are here to stay.