The sociopolitical ideas behind how Jean is written (a captain of a rebelling force who never once engages in combat?) is sexist chauvinism. The story is absurd and pointless, and the ending makes no sense outside of some mystic divine right of kings bullshit (and even then, still makes no sense).
Wordplay, music, dancing, extravagance, and color. The sets are fairytale bold and the costumes are technicolor bright. The performances are all good... but Danny Kaye's is magnificent. The comedy relies on him making a fool of himself (pun intended and stolen from the film itself). The music is corny and fun. The whole thing is a wonderful escape with elements of Robin Hood turned inside out.
What a lovely way to spend an evening.