This is exactly right. So much of the discussion here is because people can't turn their own arguments against themselves. The sentiment is, "clearly this is bad and needs to go away." This is also an extension of surveillance arguments where people say "i have nothing to hide." They forget to take into consideration the power that has been given to a group that could become immoral in the future and use that power against them.
I really wish we could agree that freedom is a burden and we can and should shoulder that burden because it is worth it. Let's all take some responsibility for not doing enough to convince extremists away from their beliefs. Let's accept that censorship represents a failure of imagination in combating the issue responsibly (whatever that might be).