Why is Jimi Hendrix so revered as a guitar player?

hmm well I think a majority of his early songs like Purple Haze, Foxy Lady, Red House, Wind Cries Mary, Voodoo Child etc were based in blues (especially Red House which is now a blues standard) but I implore you to explore more of Hendrix’s catalog:

Third Stone from the Sun is psychedelic rock and we see Hendrix made use of feedback and whammy quite nicely here

Bold as Love, Little Wing and Castles made of sand are nice ballads with unusual chords that I guess we would call ‘Hendrixian’ now

Still Raining Still Dreaming, Rainy Day Dream Away and Burning of the midnight lamp are nice wah soaked tunes that are rooted in psychedelic/funk

1983 a Merman should be is an amazing track and is almost unlike anything else that was released at the time. It’s an experimental psychedelic studio tune that everyone should give a listen to

and of course Machine Gun is not only one of the greatest electric guitar performances ever, but some would say to this day no other guitar player has managed to fit so much emotion and be able to express it with their guitar as much as Hendrix did, he emulates the sounds of bombs dropping and planes diving (this is because the context was the Vietnam War which Hendrix was strongly opposed to) using his whammy, Octavia, Univibe, Fuzz face and feedback, it was complete and utter mastery of the electric guitar