This is a filler piece. Fluff (groan!). There isn't a coherent argument presented for either side, nor do I think that is the intent.
For more informed and intelligent analysis, go to the Electronic Frontier Foundation's webby... or search for Creative Commons...
Copyright exists upon creation of the work. How you choose to deal with anything downstream is a sub-set of that function. For example, have a look at Jay Maisel's boiler plate at the bottom of his website:
www.jaymaisel.com