My son's favourite song at age 10 was Hey Jude.

Depends, who's Big Sean?

In that case, Taylor Swift is twice the "rockstar" Kanye is at the moment.

I vaguely recall an American President who was dumb as a post getting reelected for a second term.
Ironically, West's wife, don't recall her name, is also dumb as a post and she's also pretty famous.

How soon is now?

No; it isn't; and yes.
Unless you were asking rhetorically, in which case I apologize.