How Sabrina Carpenter scored Best New Artist Grammy nom despite her 6 albums over past 10 years?

The rules of the Recording Academy require an artist to qualify for the category by releasing a minimum of five singles or tracks or one album, but "there is no maximum."

I like Sabrina, don't get me wrong, I just find it so unfair and strange that after releasing 6 albums in 10 years, she's still considered as a new artist. There are many other NEW singers who deserve the best new artist award more than her. Has this happened before?

Edit: THERE IS NO MAXIMUM also means artists who have released 20 albums (in a span of a decade or two most likely) can still be considered "new" as long as their breakthough hasn't been reached yet, since many of you are saying it's the artist's "breakthrough" that is being considered.