It's a bit superfluous, but I don't think it's too much. Besides, the OS can use the extra memory as cache/buffers.
I think he was referring to 4GB as being too little. If you are doing anything involving photos/video/audio editing, you are probably going to want at least 8GB.
...and in one year you will need 16GB.
I think I was oh-too-cleverly pointing out the absurdity of having so much memory in a laptop and thinking it might not be enough.