I am pasting a copy of what I wrote in the comments section of the aticle in question:

While I love all of the guitarists on your suggested list, the title of the list is not "Who is the greatest blues guitarist of all time?" or "Who is the greatest electric guitarist of all time?", but"Who is the greatest guitarist of all time?" That means that Lenny Breau, Herb Ellis, Tal Farlow, Carlos Montoya, Gabor Zsabo, Tony Rice, Julian Bream… should also be considered.
I think it's impossible to come up with a definitive #1 guitarist. Doc Watson could play things that Jimi Hendrix couldn't and Vice versa. Same goes for Chet Atkins and Stevie Ray Vaughn. Probably there is some kid in a garage somewhere who could blow them all away.