I didn't expect this negative reception tbh.
Sure Cyrus is a nobody but he's a talented nobody, there are plenty of worse artists on Sony's roster they could have forced her to collaborate with.
It's definitely gonna be a ballad which is exactly what I think she needs right now. She's had four super upbeat pop singles in a row (Up, Sweet Talk, Shake That, Always) none of them really smashed. Hoping this is her/their "Battle Scars" moment.

Something to really showcase both of their vocals.
It's likely they'll promo on the X Factor live decider either Monday 7th or Monday 14th which should help the song a lot.