Per the album credits I read, he's on one or two for writing I think, Bad Blood was one of them I believe.
I assumed he'd be writing with them as they've been a mixed bag over the last few years, and he's the powerhouse behind FFAK, so that tracks.
Having listened through the album a couple of times now, idk why they went with the singles they did. I liked some of the other songs and the album overall.