It annoys me greatly when people say that Hendrix was the greatest guitar player. From a technical standpoint, I can name a ton of guitarists better than him.
Credit where credit is due. He could play the guitar and he was an excellent performer. His playing influenced what must be millions of people, including a ton who are famous guitarists themselves.
I just don't think he was as skillful as people credit him for. For example, check his live performances. He was unable to play the same thing twice and had horrible timing. His backing band was able to adjust for this though it becomes more evident when you hear him play with other guitarists who do have a working sense of time.