For people who didn't listen but commented away , Nicki is saying that Instagram's excuse for mental health and self-esteem for users is and it's really about them being upset that they aren't getting a cut of the money that individuals make through IG by getting sponsored for "likes". You know, because if companies see influencers getting a certain amount of "Likes" per posts, they might want them to endorse their products and IG is they're not getting that dinero. Never thought about it that way. She may be on to something.
If this were true, instagram would have also chosen to hide public follower counts. This idea that Nicki cares about small businesses is completely ludicrous, she's concern trolling because she simply enjoys the validation of getting likes and is politicizing the issue with misinformation to rile up her followers. Her only goal by threatening to leave the platform is to fill instagram's inboxes with her angry followers demanding that instagram keeps likes.
She could also choose a small business to feature on her platform once a week, they'd instantly see engagement and conversions just off Nicki's cosign. But that's too much like what a person who walks what they talk would do.