The thing is, Carrie's five albums into her career.
She has #1 albums, she has one of the largest opening weeks for a female artist with 'Carnival Ride'. She's had a multiple weeks number one album.. what else does she have left to accomplish?
Yes, four #1 albums would be nice but we have three #1 albums and some fanbases don't even get a top ten debuting album. We can't be selfish, or else this era won't be enjoyable.