"Haters gonna hate hate hate hate hate" has to be at least partially about 1D fans.
Nah, I think it's the Jezebel type blogs. There are some nasty blogs online. I don't think Taylor care about those little girls/boys unless they've impacted her wallet.
Her MMmmm tracks follow similar formats, so let me rank.
Verses: Shake It Off > WANEBGT > IKYWT > 22
Pre-Chorus: Shake It Off > 22 > WANEGBT > IKYWT
Chorus: IKYWT > WANEGBT > 22 > Shake It Off
Bridge: IKYWT > 22 > Shake It Off > WANEGBT
Video: Shake It Off > 22 > IKYWT > WANEGBT
Overall: IKYWT > Shake it Off > WANEGBT > 22