"Always dangerous, tho, to attribute to a writer an opinion expressed by one of his characters: esp, as here Stim, when its spoken by a habitually cynical Englishwoman created by an Irishman."

Yes, but this is very much an opinion which he expressed in his political writings. Don't forget that Wilde was a self-confessed socialist-anarchist who, after meeting Kropotkin, considered his life to be one of the two most perfect lives he had ever come across. He railed against the establishment and most forms of state control and these opinions are reflected even in his lighter-hearted work.