"While a particular culture may call for certain shifts in 
    attitude, that does not mean verbalized consent is not 
    important."

Nor does it mean that verbalized consent is important or necessary. Not all human communication is verbal.

    "but I feel that Kickstarter's stance is defensible from 
    the position of not wanting to be associated with such 
    dangerous and callous material."

Do you find the financial embargo of Wikileaks by Visa, Mastercard, Paypal and Amex to be acceptable?

With centralized electronic payments and centralized crowdfunding platforms we've lost the neutrality of money and that is a threat to a free and open society.