No, I don't think you've missed anything. I'm pretty sure there is not a responsive version of the SMF site for internet browsers. The only way you can get a responsive interface is to use the SMF app or use the TapaTalk app. When I'm using my Kindle, I view it via TapaTalk, since the SMF app doesn't work for the Kindle. It's a pain to view SMF through the Kindle's browser.