I'm tech savvy and I still don't want to download an app, open it up, steady my camera, take a picture, wait for it to think about it, and take me to the website. Just give me a damn URL.
Google's Search App will scan QR codes, the thinking is near-instant (camera focusing will take longer), and it pops up directly to the App store. I think the burden is pretty low. Typing in a URL is certainly more effort.