A great guitarist? You and me both.
They are thousands of great guitarists and each one is different!
Meaningless to anyone over 13.
Well Hendrix is much older and a stepping stone, just like Van Halen after him, but the world of guitar has evolved a lot since the 60s and 70s. Since the 80s, not thaaaat much, that was the era where guitar was explored thoroughly. That's not to say that there is no great original guitar music produced today, but it doesn't break new ground as much.