Isn't it obvious to check how much of the checkmarks there is before you start unchecking them?

In order to do so, you have to scroll to the bottom of the page. If you scroll to the bottom of the page, you'll notice that there's a "save settings" button, and without clicking on the bottom, you'll be unchecking them for nothing. And if you notice that button, you're going to notice "unsubscribe from all emails" link right below it.

I don't see that as being more crappy UX than the rest of the Goodreads design.