LOIC tool used in the "Anonymous" attacks

I was reading about this- yeah really "anonymous".

http://praetorianprefect.com/archives/2010/12/anonymous-releases-very-unanonymous-press-release/

Also:

http://www.boingboing.net/2010/12/11/anonymous-isnt-loic.html

Andrew

All we know with certainty is that there is *a* name in the metadata.
Why would anyone conclude that it is definitely the name of the author?