Simon and Garfunkel

I have been listening to an old casette tape, "Simon and Garfunkel, Live in Central Park" and on man these are truly great songs!...."Homeward Bound", Mrs. Robinson", "America", "The Boxer", "Scarborough Fair"...
Fantastic and heartfelt songs...and all written by Paul Simon...
But on their latest tour Paul admitted why they don't sing or record or tour anymore...it just seems so stupid..."Art and I just don't get along! we just don't...It seems petty, but when we're doing "Bridge Over Troubled Water" and Art's voice soars, and the audience soars, hey wait a minute....that's my song! Why are they cheering Art, when I wrote that?"
Well at least he admits it. But it all seems so incongruous and unnecessary.
I'm glad their songs have touched our lives. Paul Simon is an astonishing songwriter.
But please, does he and Art really need to be this petty now? They have a ton of money, their songs are immortal...it would be nice to see a little humility and just focus on the music, like in the beginning.