Lee Sedol is the most common way to transcribe his name in English. Also the page includes way too many subjective opinions.
I agree the name of this article should be changed to Lee Sedol, similarly for Lee Chang Ho (who even calls himself that on his website http://www.leechangho.com). Regarding subjective opinions, they are welcome on Sensei's Library (unless misrepresented as fact), this is not Wikipedia.
Could you be more specific? Which ones do you consider to be subjective?
Also, this is a wiki, so if something is just plain wrong, you can edit it yourself.