@The argument that Kanye's the biggest artist of our era...
Yeah. *Now.*
Will he be the greatest author of our era in 20 years?
Van Gogh rose from nothing to become the greatest Dutch painter of his time, and while art's my weakest point in the Humanities, I'm willing to bet he'd rank somewhere on most of our Top 10 lists (and, you know, the lists that experts might do.)
Then you have the rise and fall, or even the rise and diminishing/eclipse of stars:
Say the name Shakespeare, and most people who know the English language or even know anything about it have probably heard that name.
Say Christopher Marlowe, and from fans of literature, sure, you still get reverence...but where Chris once eclipsed Bill, today, there's no doubt that the former's early death and the latter's career and reception afterward has seen that pecking order flip-flop (and to boot? If you're an Elizabethan playwright NOT named Marlowe or Shakespeare, unless you're a pretty big English lit or even Elizabethan lit person, chances are good the wider world has forgotten you...sorry Thomases Kyd, Middleton and Dekker. At least you wrote some good stuff all the same.) :)
Works for music, too--
Amazingly, both Bach and Vivaldi went into huge recessions, and of course, if Salieri was a major star before and during Mozart's lifetime...but AFTERWARD...
Well, yes, he's still well-respected, but again, chances are, the first thing most people think of when they think of him is the maybe-more-myth-than-fact Salieri vs. Mozart rivalry...
And that was BEFORE "Amadeus" won Best Picture. (So, hey, look at it this way, Salieri--you got to be played by F. Murray Abraham, that's pretty cool!) ;)
So, yeah, Kanye's big now...
Get back to me and tell me what people think of him and his decadent marriage to the most infamous of the Kardashians in, oh, a decade...or two...or a century...or two...
THEN I'll be impressed.