Rapunzel isn't exactly a huge feminist. (At least in my opinion) She's really sweet, kind, and bubbly, and I don't really think she's a feminist. At least compared to the other three.

She's naive. It's perfectly fine to have glass but the whole "Look at me. Innocent and naive little me" gives women a bad perception.

^Exactly.

I think it's justified that she's naive since she spent her whole life locked away in a tower. The problem occurs when nearly everyone is charmed by her innocence and how even the bad boy eventually falls for her. I think she's emotionally strong but the whole "naive, innocent princess" is cliched. Plus the film has the chance to explore some of her neuroses but mostly glosses them over. My idea of a feminist character doesn't mean always in charge or a great fighter, but a complex, emotionally deep individual who has both good and bad traits, Rapunzel is too much of a one-sided character in this regard.