And there's nothing wrong with lip-syncing (to a certain extent) esp. if you're doing intense choreography. There are some "artists" today who still lip-sync while doing little to no choreography & they do so simply because they can't sing.
Oh please why are Nicki stans trying it? The track is always louder than her voice, you can't even listen to her, besides she raps, she doesn't to put much effort on it, I believe. Not hating, love Nicki.