Obviously it won't hurt the song on the charts but Why Try, My Everything, Best Mistake and even JALBOYH would get a much bigger boost from a performance, specially at the Grammys.
Wait, I've been out of the Ariana circle for a while, you mean Best Mistake HASN'T been released as a single yet??
I'm gonna be real though, I think she's picking the singles right this era apart from Best Mistake not having a release yet. SOOO many single worthy songs from Yours Truly were scrapped. (Honeymoon Avenue, Tattooed Heart, Piano)
I wonder if this will be the last single. There are a lot of potential singles still on the album (Why Try, Break Your Heart Right Back, My Everything).
They might be ready to move on to the third album for this August.