Copying and pasting the receiving address then manually cross checking the first and last few characters yourself to confirm if it's the right address is actually better in my opinion than scanning the QR code. Cameras are easily hijacked just like keyboards and because of something this some devices have a feature where you can turn off or on your camera at will.

As for keyloggers they are way worse as the hacker can see everything you do with your keyboard with time stamps. So it's not just what you copy and paste that's affected in the case of a keylogger.