"Sadism consists in the enjoyment of other people's actual suffering. Since binding and chaining are the one harmless, painless way of subjecting the heroine to menace and making drama of it, I have developed elaborate ways of having Wonder Woman and other characters confined."
"Confinement to WW and the Amazons is just a sporting game, an actual enjoyment of being subdued. This, my dear friend, is the one truly great contribution of my Wonder Woman strip to moral education of the young. The only hope for peace is to teach people who are full of pep and unbound force to enjoy being bound. Women are exciting for this one reason - it is the secret of women's allure - women enjoy submission, being bound. This I bring out in the Paradise Island sequences where the girls beg for chains and enjoy wearing them."
Oh. Well, then.
Since they enjoy it, I guess it's okay.