I can understand someone not wanting to listen to Parker on alto for hours on end. For me, I would much rather listen to Cannonball for hours on end. I think it is the style, not the instrument.
I am not trying to judge which music is better; I am just saying what I like to listen to.
Many people may not want to listen to Coltrane's playing on Tenor for hours on end, either. For example:
Jimmy Cobb gave an interview for a TV special on PBS in the 1990s., when he was the only surviving artist of the "Kind of Blue" recording session. Cobb claimed that Cannonball could not stand the way Coltrane was playing during the "Kind of Blue" sessions, that Cannonball's solo on "Freddie" was an angry response to his dissatisfaction with Coltrane's playing, and that after the recording sessions were over Cannonball checked himself into a hospital with a migraine headache. I don't have any other proof of this, but after I heard Cobb's interview, I listed to "Freddie" again, and it does seem that Cannonball's solo has a little bit of the "NO, THIS IS HOW YOU DO IT" in there.
By the way, the TV special I refer to here was on the making of Jon Hendricks' vocallise cover of "Freddie the Freeloader". This version uses Bobby McFerrin, Al Jarreau, Jon Hendricks, and George Benson for the 4 solos, and it is truly marvelous.