To my understanding the two sides of this issue are whether or not Kickstarter has the right to choose what is on their site. I say they do. I do not understand the position that they must allow any project even if they don't want to (as long as they comply with the law)
The issue of whether this book is misogynist or not doesn't really matter. You can still buy it if you want or any other legal material you want to buy. Just not on Kickstarter. There are many stores that don't sell things I want to buy.
But what happens when the feminists run kickstarter, and facebook, and google, and tumblr, and twitter, and hacker news? There are many sites who would simply ban one side of the conversation. Sure, you may have the legal right to speak then, but not the ability.
Meanwhile, I don't think it is wrong to sell books to men to help them learn what women want to succeed in the confusing world of dating. If you can write a better book, one filled with sexy ways to ask permission for each escalation, then thousands of men will buy it.
The real problem is that the science of attraction doesn't match well with feminism. And men want to know the truth. A woman is twice as likely to give you her number if you touch her on the arm at your first meeting[1]. Are we supposed to surpress this hatefact? Or fire the psychologist who did the study?
The issue of whether this book is misogynist or not doesn't really matter. You can still buy it if you want or any other legal material you want to buy. Just not on Kickstarter. There are many stores that don't sell things I want to buy.